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Diffstat (limited to 'src/gui/image/qpixmap_x11.cpp')
| -rw-r--r-- | src/gui/image/qpixmap_x11.cpp | 2291 |
1 files changed, 2291 insertions, 0 deletions
diff --git a/src/gui/image/qpixmap_x11.cpp b/src/gui/image/qpixmap_x11.cpp new file mode 100644 index 0000000..d758221 --- /dev/null +++ b/src/gui/image/qpixmap_x11.cpp @@ -0,0 +1,2291 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// Uncomment the next line to enable the MIT Shared Memory extension +// +// WARNING: This has some problems: +// +// 1. Consumes a 800x600 pixmap +// 2. Qt does not handle the ShmCompletion message, so you will +// get strange effects if you xForm() repeatedly. +// +// #define QT_MITSHM + +#if defined(Q_OS_WIN32) && defined(QT_MITSHM) +#undef QT_MITSHM +#endif + +#include "qplatformdefs.h" + +#include "qdebug.h" +#include "qiodevice.h" +#include "qpixmap_x11_p.h" +#include "qbitmap.h" +#include "qcolormap.h" +#include "qimage.h" +#include "qmatrix.h" +#include "qapplication.h" +#include <private/qpaintengine_x11_p.h> +#include <private/qt_x11_p.h> +#include "qx11info_x11.h" +#include <private/qdrawhelper_p.h> + +#include <stdlib.h> + +#if defined(Q_CC_MIPS) +# define for if(0){}else for +#endif + +QT_BEGIN_NAMESPACE + +QPixmap qt_toX11Pixmap(const QImage &image) +{ + QPixmapData *data = + new QX11PixmapData(image.depth() == 1 + ? QPixmapData::BitmapType + : QPixmapData::PixmapType); + + data->fromImage(image, Qt::AutoColor); + + return QPixmap(data); +} + +QPixmap qt_toX11Pixmap(const QPixmap &pixmap) +{ + if (pixmap.isNull()) + return QPixmap(); + + if (QPixmap(pixmap).data_ptr()->classId() == QPixmapData::X11Class) + return pixmap; + + return qt_toX11Pixmap(pixmap.toImage()); +} + +// For thread-safety: +// image->data does not belong to X11, so we must free it ourselves. + +inline static void qSafeXDestroyImage(XImage *x) +{ + if (x->data) { + free(x->data); + x->data = 0; + } + XDestroyImage(x); +} + +QBitmap QX11PixmapData::mask_to_bitmap(int screen) const +{ + if (!x11_mask) + return QBitmap(); + QPixmap::x11SetDefaultScreen(screen); + QBitmap bm(w, h); + GC gc = XCreateGC(X11->display, bm.handle(), 0, 0); + XCopyArea(X11->display, x11_mask, bm.handle(), gc, 0, 0, + bm.data->width(), bm.data->height(), 0, 0); + XFreeGC(X11->display, gc); + return bm; +} + +Qt::HANDLE QX11PixmapData::bitmap_to_mask(const QBitmap &bitmap, int screen) +{ + if (bitmap.isNull()) + return 0; + QBitmap bm = bitmap; + bm.x11SetScreen(screen); + + Pixmap mask = XCreatePixmap(X11->display, RootWindow(X11->display, screen), + bm.data->width(), bm.data->height(), 1); + GC gc = XCreateGC(X11->display, mask, 0, 0); + XCopyArea(X11->display, bm.handle(), mask, gc, 0, 0, + bm.data->width(), bm.data->height(), 0, 0); + XFreeGC(X11->display, gc); + return mask; +} + + +/***************************************************************************** + MIT Shared Memory Extension support: makes xForm noticeably (~20%) faster. + *****************************************************************************/ + +#if defined(QT_MITSHM) + +static bool xshminit = false; +static XShmSegmentInfo xshminfo; +static XImage *xshmimg = 0; +static Pixmap xshmpm = 0; + +static void qt_cleanup_mitshm() +{ + if (xshmimg == 0) + return; + Display *dpy = QX11Info::appDisplay(); + if (xshmpm) { + XFreePixmap(dpy, xshmpm); + xshmpm = 0; + } + XShmDetach(dpy, &xshminfo); xshmimg->data = 0; + qSafeXDestroyImage(xshmimg); xshmimg = 0; + shmdt(xshminfo.shmaddr); + shmctl(xshminfo.shmid, IPC_RMID, 0); +} + +static bool qt_create_mitshm_buffer(const QPaintDevice* dev, int w, int h) +{ + static int major, minor; + static Bool pixmaps_ok; + Display *dpy = dev->data->xinfo->display(); + int dd = dev->x11Depth(); + Visual *vis = (Visual*)dev->x11Visual(); + + if (xshminit) { + qt_cleanup_mitshm(); + } else { + if (!XShmQueryVersion(dpy, &major, &minor, &pixmaps_ok)) + return false; // MIT Shm not supported + qAddPostRoutine(qt_cleanup_mitshm); + xshminit = true; + } + + xshmimg = XShmCreateImage(dpy, vis, dd, ZPixmap, 0, &xshminfo, w, h); + if (!xshmimg) + return false; + + bool ok; + xshminfo.shmid = shmget(IPC_PRIVATE, + xshmimg->bytes_per_line * xshmimg->height, + IPC_CREAT | 0777); + ok = xshminfo.shmid != -1; + if (ok) { + xshmimg->data = (char*)shmat(xshminfo.shmid, 0, 0); + xshminfo.shmaddr = xshmimg->data; + ok = (xshminfo.shmaddr != (char*)-1); + } + xshminfo.readOnly = false; + if (ok) + ok = XShmAttach(dpy, &xshminfo); + if (!ok) { + qSafeXDestroyImage(xshmimg); + xshmimg = 0; + if (xshminfo.shmaddr) + shmdt(xshminfo.shmaddr); + if (xshminfo.shmid != -1) + shmctl(xshminfo.shmid, IPC_RMID, 0); + return false; + } + if (pixmaps_ok) + xshmpm = XShmCreatePixmap(dpy, DefaultRootWindow(dpy), xshmimg->data, + &xshminfo, w, h, dd); + + return true; +} + +#else + +// If extern, need a dummy. +// +// static bool qt_create_mitshm_buffer(QPaintDevice*, int, int) +// { +// return false; +// } + +#endif // QT_MITSHM + + +/***************************************************************************** + Internal functions + *****************************************************************************/ + +extern const uchar *qt_get_bitflip_array(); // defined in qimage.cpp + +// Returns position of highest bit set or -1 if none +static int highest_bit(uint v) +{ + int i; + uint b = (uint)1 << 31; + for (i=31; ((b & v) == 0) && i>=0; i--) + b >>= 1; + return i; +} + +// Returns position of lowest set bit in 'v' as an integer (0-31), or -1 +static int lowest_bit(uint v) +{ + int i; + ulong lb; + lb = 1; + for (i=0; ((v & lb) == 0) && i<32; i++, lb<<=1) {} + return i==32 ? -1 : i; +} + +// Counts the number of bits set in 'v' +static uint n_bits(uint v) +{ + int i = 0; + while (v) { + v = v & (v - 1); + i++; + } + return i; +} + +static uint *red_scale_table = 0; +static uint *green_scale_table = 0; +static uint *blue_scale_table = 0; + +static void cleanup_scale_tables() +{ + delete[] red_scale_table; + delete[] green_scale_table; + delete[] blue_scale_table; +} + +/* + Could do smart bitshifting, but the "obvious" algorithm only works for + nBits >= 4. This is more robust. +*/ +static void build_scale_table(uint **table, uint nBits) +{ + if (nBits > 7) { + qWarning("build_scale_table: internal error, nBits = %i", nBits); + return; + } + if (!*table) { + static bool firstTable = true; + if (firstTable) { + qAddPostRoutine(cleanup_scale_tables); + firstTable = false; + } + *table = new uint[256]; + } + int maxVal = (1 << nBits) - 1; + int valShift = 8 - nBits; + int i; + for(i = 0 ; i < maxVal + 1 ; i++) + (*table)[i << valShift] = i*255/maxVal; +} + +static int defaultScreen = -1; + +/***************************************************************************** + QPixmap member functions + *****************************************************************************/ + +static int qt_pixmap_serial = 0; +int Q_GUI_EXPORT qt_x11_preferred_pixmap_depth = 0; + +QX11PixmapData::QX11PixmapData(PixelType type) + : QPixmapData(type, X11Class), hd(0), w(0), h(0), d(0), + uninit(true), read_only(false), x11_mask(0), picture(0), mask_picture(0), hd2(0), + share_mode(QPixmap::ImplicitlyShared), pengine(0) +{ +} + +void QX11PixmapData::resize(int width, int height) +{ + setSerialNumber(++qt_pixmap_serial); + + w = width; + h = height; + + if (defaultScreen >= 0 && defaultScreen != xinfo.screen()) { + QX11InfoData* xd = xinfo.getX11Data(true); + xd->screen = defaultScreen; + xd->depth = QX11Info::appDepth(xd->screen); + xd->cells = QX11Info::appCells(xd->screen); + xd->colormap = QX11Info::appColormap(xd->screen); + xd->defaultColormap = QX11Info::appDefaultColormap(xd->screen); + xd->visual = (Visual *)QX11Info::appVisual(xd->screen); + xd->defaultVisual = QX11Info::appDefaultVisual(xd->screen); + xinfo.setX11Data(xd); + } + + int dd = xinfo.depth(); + + if (qt_x11_preferred_pixmap_depth) + dd = qt_x11_preferred_pixmap_depth; + + bool make_null = w <= 0 || h <= 0; // create null pixmap + d = (pixelType() == BitmapType ? 1 : dd); + if (make_null || d == 0) { + w = 0; + h = 0; + hd = 0; + picture = 0; + d = 0; + if (!make_null) + qWarning("QPixmap: Invalid pixmap parameters"); + return; + } + hd = (Qt::HANDLE)XCreatePixmap(X11->display, + RootWindow(X11->display, xinfo.screen()), + w, h, d); +#ifndef QT_NO_XRENDER + if (X11->use_xrender) { + XRenderPictFormat *format = d == 1 + ? XRenderFindStandardFormat(X11->display, PictStandardA1) + : XRenderFindVisualFormat(X11->display, (Visual *)xinfo.visual()); + picture = XRenderCreatePicture(X11->display, hd, format, 0, 0); + } +#endif // QT_NO_XRENDER +} + +void QX11PixmapData::fromImage(const QImage &img, + Qt::ImageConversionFlags flags) +{ + setSerialNumber(++qt_pixmap_serial); + + w = img.width(); + h = img.height(); + d = img.depth(); + + if (defaultScreen >= 0 && defaultScreen != xinfo.screen()) { + QX11InfoData* xd = xinfo.getX11Data(true); + xd->screen = defaultScreen; + xd->depth = QX11Info::appDepth(xd->screen); + xd->cells = QX11Info::appCells(xd->screen); + xd->colormap = QX11Info::appColormap(xd->screen); + xd->defaultColormap = QX11Info::appDefaultColormap(xd->screen); + xd->visual = (Visual *)QX11Info::appVisual(xd->screen); + xd->defaultVisual = QX11Info::appDefaultVisual(xd->screen); + xinfo.setX11Data(xd); + } + + if (pixelType() == BitmapType) { + bitmapFromImage(img); + return; + } + + if (uint(w) >= 32768 || uint(h) >= 32768) { + w = h = 0; + return; + } + + int dd = X11->use_xrender && img.hasAlphaChannel() ? 32 : xinfo.depth(); + if (qt_x11_preferred_pixmap_depth) + dd = qt_x11_preferred_pixmap_depth; + + QImage image = img; + + // must be monochrome + if (dd == 1 || (flags & Qt::ColorMode_Mask) == Qt::MonoOnly) { + if (d != 1) { + // dither + image = image.convertToFormat(QImage::Format_MonoLSB, flags); + d = 1; + } + } else { // can be both + bool conv8 = false; + if (d > 8 && dd <= 8) { // convert to 8 bit + if ((flags & Qt::DitherMode_Mask) == Qt::AutoDither) + flags = (flags & ~Qt::DitherMode_Mask) + | Qt::PreferDither; + conv8 = true; + } else if ((flags & Qt::ColorMode_Mask) == Qt::ColorOnly) { + conv8 = (d == 1); // native depth wanted + } else if (d == 1) { + if (image.numColors() == 2) { + QRgb c0 = image.color(0); // Auto: convert to best + QRgb c1 = image.color(1); + conv8 = qMin(c0,c1) != qRgb(0,0,0) || qMax(c0,c1) != qRgb(255,255,255); + } else { + // eg. 1-color monochrome images (they do exist). + conv8 = true; + } + } + if (conv8) { + image = image.convertToFormat(QImage::Format_Indexed8, flags); + d = 8; + } + } + + if (d == 1 || d == 16 || d == 24) { + image = image.convertToFormat(QImage::Format_RGB32, flags); + fromImage(image, Qt::AutoColor); + return; + } + + Display *dpy = X11->display; + Visual *visual = (Visual *)xinfo.visual(); + XImage *xi = 0; + bool trucol = (visual->c_class >= TrueColor); + int nbytes = image.numBytes(); + uchar *newbits= 0; + +#ifndef QT_NO_XRENDER + if (X11->use_xrender && image.hasAlphaChannel()) { + const QImage &cimage = image; + + d = 32; + + if (QX11Info::appDepth() != d) { + if (xinfo.x11data) { + xinfo.x11data->depth = d; + } else { + QX11InfoData *xd = xinfo.getX11Data(true); + xd->screen = QX11Info::appScreen(); + xd->depth = d; + xd->cells = QX11Info::appCells(); + xd->colormap = QX11Info::appColormap(); + xd->defaultColormap = QX11Info::appDefaultColormap(); + xd->visual = (Visual *)QX11Info::appVisual(); + xd->defaultVisual = QX11Info::appDefaultVisual(); + xinfo.setX11Data(xd); + } + } + + hd = (Qt::HANDLE)XCreatePixmap(dpy, RootWindow(dpy, xinfo.screen()), + w, h, d); + picture = XRenderCreatePicture(X11->display, hd, + XRenderFindStandardFormat(X11->display, PictStandardARGB32), 0, 0); + + xi = XCreateImage(dpy, visual, d, ZPixmap, 0, 0, w, h, 32, 0); + Q_CHECK_PTR(xi); + newbits = (uchar *)malloc(xi->bytes_per_line*h); + Q_CHECK_PTR(newbits); + xi->data = (char *)newbits; + + switch(cimage.format()) { + case QImage::Format_Indexed8: { + QVector<QRgb> colorTable = cimage.colorTable(); + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const uchar *p = cimage.scanLine(y); + for (int x = 0; x < w; ++x) { + const QRgb rgb = colorTable[p[x]]; + const int a = qAlpha(rgb); + if (a == 0xff) + *xidata = rgb; + else + // RENDER expects premultiplied alpha + *xidata = qRgba(qt_div_255(qRed(rgb) * a), + qt_div_255(qGreen(rgb) * a), + qt_div_255(qBlue(rgb) * a), + a); + ++xidata; + } + } + } + break; + case QImage::Format_RGB32: { + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const QRgb *p = (const QRgb *) cimage.scanLine(y); + for (int x = 0; x < w; ++x) + *xidata++ = p[x] | 0xff000000; + } + } + break; + case QImage::Format_ARGB32: { + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const QRgb *p = (const QRgb *) cimage.scanLine(y); + for (int x = 0; x < w; ++x) { + const QRgb rgb = p[x]; + const int a = qAlpha(rgb); + if (a == 0xff) + *xidata = rgb; + else + // RENDER expects premultiplied alpha + *xidata = qRgba(qt_div_255(qRed(rgb) * a), + qt_div_255(qGreen(rgb) * a), + qt_div_255(qBlue(rgb) * a), + a); + ++xidata; + } + } + + } + break; + case QImage::Format_ARGB32_Premultiplied: { + uint *xidata = (uint *)xi->data; + for (int y = 0; y < h; ++y) { + const QRgb *p = (const QRgb *) cimage.scanLine(y); + memcpy(xidata, p, w*sizeof(QRgb)); + xidata += w; + } + } + break; + default: + Q_ASSERT(false); + } + + if ((xi->byte_order == MSBFirst) != (QSysInfo::ByteOrder == QSysInfo::BigEndian)) { + uint *xidata = (uint *)xi->data; + uint *xiend = xidata + w*h; + while (xidata < xiend) { + *xidata = (*xidata >> 24) + | ((*xidata >> 8) & 0xff00) + | ((*xidata << 8) & 0xff0000) + | (*xidata << 24); + ++xidata; + } + } + + GC gc = XCreateGC(dpy, hd, 0, 0); + XPutImage(dpy, hd, gc, xi, 0, 0, 0, 0, w, h); + XFreeGC(dpy, gc); + + qSafeXDestroyImage(xi); + + return; + } +#endif // QT_NO_XRENDER + + if (trucol) { // truecolor display + if (image.format() == QImage::Format_ARGB32_Premultiplied) + image = image.convertToFormat(QImage::Format_ARGB32); + + const QImage &cimage = image; + QRgb pix[256]; // pixel translation table + const bool d8 = (d == 8); + const uint red_mask = (uint)visual->red_mask; + const uint green_mask = (uint)visual->green_mask; + const uint blue_mask = (uint)visual->blue_mask; + const int red_shift = highest_bit(red_mask) - 7; + const int green_shift = highest_bit(green_mask) - 7; + const int blue_shift = highest_bit(blue_mask) - 7; + const uint rbits = highest_bit(red_mask) - lowest_bit(red_mask) + 1; + const uint gbits = highest_bit(green_mask) - lowest_bit(green_mask) + 1; + const uint bbits = highest_bit(blue_mask) - lowest_bit(blue_mask) + 1; + + if (d8) { // setup pixel translation + QVector<QRgb> ctable = cimage.colorTable(); + for (int i=0; i < cimage.numColors(); i++) { + int r = qRed (ctable[i]); + int g = qGreen(ctable[i]); + int b = qBlue (ctable[i]); + r = red_shift > 0 ? r << red_shift : r >> -red_shift; + g = green_shift > 0 ? g << green_shift : g >> -green_shift; + b = blue_shift > 0 ? b << blue_shift : b >> -blue_shift; + pix[i] = (b & blue_mask) | (g & green_mask) | (r & red_mask) + | ~(blue_mask | green_mask | red_mask); + } + } + + xi = XCreateImage(dpy, visual, dd, ZPixmap, 0, 0, w, h, 32, 0); + Q_CHECK_PTR(xi); + newbits = (uchar *)malloc(xi->bytes_per_line*h); + Q_CHECK_PTR(newbits); + if (!newbits) // no memory + return; + int bppc = xi->bits_per_pixel; + + bool contig_bits = n_bits(red_mask) == rbits && + n_bits(green_mask) == gbits && + n_bits(blue_mask) == bbits; + bool dither_tc = + // Want it? + (flags & Qt::Dither_Mask) != Qt::ThresholdDither && + (flags & Qt::DitherMode_Mask) != Qt::AvoidDither && + // Need it? + bppc < 24 && !d8 && + // Can do it? (Contiguous bits?) + contig_bits; + + static bool init=false; + static int D[16][16]; + if (dither_tc && !init) { + // I also contributed this code to XV - WWA. + /* + The dither matrix, D, is obtained with this formula: + + D2 = [0 2] + [3 1] + + + D2*n = [4*Dn 4*Dn+2*Un] + [4*Dn+3*Un 4*Dn+1*Un] + */ + int n,i,j; + init=1; + + /* Set D2 */ + D[0][0]=0; + D[1][0]=2; + D[0][1]=3; + D[1][1]=1; + + /* Expand using recursive definition given above */ + for (n=2; n<16; n*=2) { + for (i=0; i<n; i++) { + for (j=0; j<n; j++) { + D[i][j]*=4; + D[i+n][j]=D[i][j]+2; + D[i][j+n]=D[i][j]+3; + D[i+n][j+n]=D[i][j]+1; + } + } + } + init=true; + } + + enum { BPP8, + BPP16_565, BPP16_555, + BPP16_MSB, BPP16_LSB, + BPP24_888, + BPP24_MSB, BPP24_LSB, + BPP32_8888, + BPP32_MSB, BPP32_LSB + } mode = BPP8; + + bool same_msb_lsb = (xi->byte_order == MSBFirst) == (QSysInfo::ByteOrder == QSysInfo::BigEndian); + + if(bppc == 8) // 8 bit + mode = BPP8; + else if(bppc == 16) { // 16 bit MSB/LSB + if(red_shift == 8 && green_shift == 3 && blue_shift == -3 && !d8 && same_msb_lsb) + mode = BPP16_565; + else if(red_shift == 7 && green_shift == 2 && blue_shift == -3 && !d8 && same_msb_lsb) + mode = BPP16_555; + else + mode = (xi->byte_order == LSBFirst) ? BPP16_LSB : BPP16_MSB; + } else if(bppc == 24) { // 24 bit MSB/LSB + if (red_shift == 16 && green_shift == 8 && blue_shift == 0 && !d8 && same_msb_lsb) + mode = BPP24_888; + else + mode = (xi->byte_order == LSBFirst) ? BPP24_LSB : BPP24_MSB; + } else if(bppc == 32) { // 32 bit MSB/LSB + if(red_shift == 16 && green_shift == 8 && blue_shift == 0 && !d8 && same_msb_lsb) + mode = BPP32_8888; + else + mode = (xi->byte_order == LSBFirst) ? BPP32_LSB : BPP32_MSB; + } else + qFatal("Logic error 3"); + +#define GET_PIXEL \ + uint pixel; \ + if (d8) pixel = pix[*src++]; \ + else { \ + int r = qRed (*p); \ + int g = qGreen(*p); \ + int b = qBlue (*p++); \ + r = red_shift > 0 \ + ? r << red_shift : r >> -red_shift; \ + g = green_shift > 0 \ + ? g << green_shift : g >> -green_shift; \ + b = blue_shift > 0 \ + ? b << blue_shift : b >> -blue_shift; \ + pixel = (r & red_mask)|(g & green_mask) | (b & blue_mask) \ + | ~(blue_mask | green_mask | red_mask); \ + } + +#define GET_PIXEL_DITHER_TC \ + int r = qRed (*p); \ + int g = qGreen(*p); \ + int b = qBlue (*p++); \ + const int thres = D[x%16][y%16]; \ + if (r <= (255-(1<<(8-rbits))) && ((r<<rbits) & 255) \ + > thres) \ + r += (1<<(8-rbits)); \ + if (g <= (255-(1<<(8-gbits))) && ((g<<gbits) & 255) \ + > thres) \ + g += (1<<(8-gbits)); \ + if (b <= (255-(1<<(8-bbits))) && ((b<<bbits) & 255) \ + > thres) \ + b += (1<<(8-bbits)); \ + r = red_shift > 0 \ + ? r << red_shift : r >> -red_shift; \ + g = green_shift > 0 \ + ? g << green_shift : g >> -green_shift; \ + b = blue_shift > 0 \ + ? b << blue_shift : b >> -blue_shift; \ + uint pixel = (r & red_mask)|(g & green_mask) | (b & blue_mask); + +// again, optimized case +// can't be optimized that much :( +#define GET_PIXEL_DITHER_TC_OPT(red_shift,green_shift,blue_shift,red_mask,green_mask,blue_mask, \ + rbits,gbits,bbits) \ + const int thres = D[x%16][y%16]; \ + int r = qRed (*p); \ + if (r <= (255-(1<<(8-rbits))) && ((r<<rbits) & 255) \ + > thres) \ + r += (1<<(8-rbits)); \ + int g = qGreen(*p); \ + if (g <= (255-(1<<(8-gbits))) && ((g<<gbits) & 255) \ + > thres) \ + g += (1<<(8-gbits)); \ + int b = qBlue (*p++); \ + if (b <= (255-(1<<(8-bbits))) && ((b<<bbits) & 255) \ + > thres) \ + b += (1<<(8-bbits)); \ + uint pixel = ((r red_shift) & red_mask) \ + | ((g green_shift) & green_mask) \ + | ((b blue_shift) & blue_mask); + +#define CYCLE(body) \ + for (int y=0; y<h; y++) { \ + const uchar* src = cimage.scanLine(y); \ + uchar* dst = newbits + xi->bytes_per_line*y; \ + const QRgb* p = (const QRgb *)src; \ + body \ + } + + if (dither_tc) { + switch (mode) { + case BPP16_565: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC_OPT(<<8,<<3,>>3,0xf800,0x7e0,0x1f,5,6,5) + *dst16++ = pixel; + } + ) + break; + case BPP16_555: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC_OPT(<<7,<<2,>>3,0x7c00,0x3e0,0x1f,5,5,5) + *dst16++ = pixel; + } + ) + break; + case BPP16_MSB: // 16 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC + *dst++ = (pixel >> 8); + *dst++ = pixel; + } + ) + break; + case BPP16_LSB: // 16 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL_DITHER_TC + *dst++ = pixel; + *dst++ = pixel >> 8; + } + ) + break; + default: + qFatal("Logic error"); + } + } else { + switch (mode) { + case BPP8: // 8 bit + CYCLE( + Q_UNUSED(p); + for (int x=0; x<w; x++) + *dst++ = pix[*src++]; + ) + break; + case BPP16_565: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x = 0; x < w; x++) { + *dst16++ = ((*p >> 8) & 0xf800) + | ((*p >> 5) & 0x7e0) + | ((*p >> 3) & 0x1f); + ++p; + } + ) + break; + case BPP16_555: + CYCLE( + quint16* dst16 = (quint16*)dst; + for (int x=0; x<w; x++) { + *dst16++ = ((*p >> 9) & 0x7c00) + | ((*p >> 6) & 0x3e0) + | ((*p >> 3) & 0x1f); + ++p; + } + ) + break; + case BPP16_MSB: // 16 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = (pixel >> 8); + *dst++ = pixel; + } + ) + break; + case BPP16_LSB: // 16 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + } + ) + break; + case BPP24_888: // 24 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + *dst++ = qRed (*p); + *dst++ = qGreen(*p); + *dst++ = qBlue (*p++); + } + ) + break; + case BPP24_MSB: // 24 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel >> 16; + *dst++ = pixel >> 8; + *dst++ = pixel; + } + ) + break; + case BPP24_LSB: // 24 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + *dst++ = pixel >> 16; + } + ) + break; + case BPP32_8888: + CYCLE( + memcpy(dst, p, w * 4); + ) + break; + case BPP32_MSB: // 32 bit MSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel >> 24; + *dst++ = pixel >> 16; + *dst++ = pixel >> 8; + *dst++ = pixel; + } + ) + break; + case BPP32_LSB: // 32 bit LSB + CYCLE( + for (int x=0; x<w; x++) { + GET_PIXEL + *dst++ = pixel; + *dst++ = pixel >> 8; + *dst++ = pixel >> 16; + *dst++ = pixel >> 24; + } + ) + break; + default: + qFatal("Logic error 2"); + } + } + xi->data = (char *)newbits; + } + + if (d == 8 && !trucol) { // 8 bit pixmap + int pop[256]; // pixel popularity + + if (image.numColors() == 0) + image.setNumColors(1); + + const QImage &cimage = image; + memset(pop, 0, sizeof(int)*256); // reset popularity array + for (int i = 0; i < h; i++) { // for each scanline... + const uchar* p = cimage.scanLine(i); + const uchar *end = p + w; + while (p < end) // compute popularity + pop[*p++]++; + } + + newbits = (uchar *)malloc(nbytes); // copy image into newbits + Q_CHECK_PTR(newbits); + if (!newbits) // no memory + return; + uchar* p = newbits; + memcpy(p, cimage.bits(), nbytes); // copy image data into newbits + + /* + * The code below picks the most important colors. It is based on the + * diversity algorithm, implemented in XV 3.10. XV is (C) by John Bradley. + */ + + struct PIX { // pixel sort element + uchar r,g,b,n; // color + pad + int use; // popularity + int index; // index in colormap + int mindist; + }; + int ncols = 0; + for (int i=0; i< cimage.numColors(); i++) { // compute number of colors + if (pop[i] > 0) + ncols++; + } + for (int i = cimage.numColors(); i < 256; i++) // ignore out-of-range pixels + pop[i] = 0; + + // works since we make sure above to have at least + // one color in the image + if (ncols == 0) + ncols = 1; + + PIX pixarr[256]; // pixel array + PIX pixarr_sorted[256]; // pixel array (sorted) + memset(pixarr, 0, ncols*sizeof(PIX)); + PIX *px = &pixarr[0]; + int maxpop = 0; + int maxpix = 0; + uint j = 0; + QVector<QRgb> ctable = cimage.colorTable(); + for (int i = 0; i < 256; i++) { // init pixel array + if (pop[i] > 0) { + px->r = qRed (ctable[i]); + px->g = qGreen(ctable[i]); + px->b = qBlue (ctable[i]); + px->n = 0; + px->use = pop[i]; + if (pop[i] > maxpop) { // select most popular entry + maxpop = pop[i]; + maxpix = j; + } + px->index = i; + px->mindist = 1000000; + px++; + j++; + } + } + pixarr_sorted[0] = pixarr[maxpix]; + pixarr[maxpix].use = 0; + + for (int i = 1; i < ncols; i++) { // sort pixels + int minpix = -1, mindist = -1; + px = &pixarr_sorted[i-1]; + int r = px->r; + int g = px->g; + int b = px->b; + int dist; + if ((i & 1) || i<10) { // sort on max distance + for (int j=0; j<ncols; j++) { + px = &pixarr[j]; + if (px->use) { + dist = (px->r - r)*(px->r - r) + + (px->g - g)*(px->g - g) + + (px->b - b)*(px->b - b); + if (px->mindist > dist) + px->mindist = dist; + if (px->mindist > mindist) { + mindist = px->mindist; + minpix = j; + } + } + } + } else { // sort on max popularity + for (int j=0; j<ncols; j++) { + px = &pixarr[j]; + if (px->use) { + dist = (px->r - r)*(px->r - r) + + (px->g - g)*(px->g - g) + + (px->b - b)*(px->b - b); + if (px->mindist > dist) + px->mindist = dist; + if (px->use > mindist) { + mindist = px->use; + minpix = j; + } + } + } + } + pixarr_sorted[i] = pixarr[minpix]; + pixarr[minpix].use = 0; + } + + QColormap cmap = QColormap::instance(xinfo.screen()); + uint pix[256]; // pixel translation table + px = &pixarr_sorted[0]; + for (int i = 0; i < ncols; i++) { // allocate colors + QColor c(px->r, px->g, px->b); + pix[px->index] = cmap.pixel(c); + px++; + } + + p = newbits; + for (int i = 0; i < nbytes; i++) { // translate pixels + *p = pix[*p]; + p++; + } + } + + if (!xi) { // X image not created + xi = XCreateImage(dpy, visual, dd, ZPixmap, 0, 0, w, h, 32, 0); + if (xi->bits_per_pixel == 16) { // convert 8 bpp ==> 16 bpp + ushort *p2; + int p2inc = xi->bytes_per_line/sizeof(ushort); + ushort *newerbits = (ushort *)malloc(xi->bytes_per_line * h); + Q_CHECK_PTR(newerbits); + if (!newerbits) // no memory + return; + uchar* p = newbits; + for (int y = 0; y < h; y++) { // OOPS: Do right byte order!! + p2 = newerbits + p2inc*y; + for (int x = 0; x < w; x++) + *p2++ = *p++; + } + free(newbits); + newbits = (uchar *)newerbits; + } else if (xi->bits_per_pixel != 8) { + qWarning("QPixmap::fromImage: Display not supported " + "(bpp=%d)", xi->bits_per_pixel); + } + xi->data = (char *)newbits; + } + + hd = (Qt::HANDLE)XCreatePixmap(X11->display, + RootWindow(X11->display, xinfo.screen()), + w, h, dd); + + GC gc = XCreateGC(dpy, hd, 0, 0); + XPutImage(dpy, hd, gc, xi, 0, 0, 0, 0, w, h); + XFreeGC(dpy, gc); + + qSafeXDestroyImage(xi); + d = dd; + +#ifndef QT_NO_XRENDER + if (X11->use_xrender) { + XRenderPictFormat *format = d == 1 + ? XRenderFindStandardFormat(X11->display, PictStandardA1) + : XRenderFindVisualFormat(X11->display, (Visual *)xinfo.visual()); + picture = XRenderCreatePicture(X11->display, hd, format, 0, 0); + } +#endif + + if (image.hasAlphaChannel()) { + QBitmap m = QBitmap::fromImage(image.createAlphaMask(flags)); + setMask(m); + } +} + +void QX11PixmapData::bitmapFromImage(const QImage &image) +{ + QImage img = image.convertToFormat(QImage::Format_MonoLSB); + const QRgb c0 = QColor(Qt::black).rgb(); + const QRgb c1 = QColor(Qt::white).rgb(); + if (img.color(0) == c0 && img.color(1) == c1) { + img.invertPixels(); + img.setColor(0, c1); + img.setColor(1, c0); + } + + char *bits; + uchar *tmp_bits; + w = img.width(); + h = img.height(); + d = 1; + int bpl = (w + 7) / 8; + int ibpl = img.bytesPerLine(); + if (bpl != ibpl) { + tmp_bits = new uchar[bpl*h]; + bits = (char *)tmp_bits; + uchar *p, *b; + int y; + b = tmp_bits; + p = img.scanLine(0); + for (y = 0; y < h; y++) { + memcpy(b, p, bpl); + b += bpl; + p += ibpl; + } + } else { + bits = (char *)img.bits(); + tmp_bits = 0; + } + hd = (Qt::HANDLE)XCreateBitmapFromData(xinfo.display(), + RootWindow(xinfo.display(), xinfo.screen()), + bits, w, h); + +#ifndef QT_NO_XRENDER + if (X11->use_xrender) + picture = XRenderCreatePicture(X11->display, hd, + XRenderFindStandardFormat(X11->display, PictStandardA1), 0, 0); +#endif // QT_NO_XRENDER + + if (tmp_bits) // Avoid purify complaint + delete [] tmp_bits; +} + +void QX11PixmapData::fill(const QColor &fillColor) +{ + if (fillColor.alpha() != 255) { +#ifndef QT_NO_XRENDER + if (X11->use_xrender) { + if (!picture || d != 32) + convertToARGB32(/*preserveContents = */false); + + ::Picture src = X11->getSolidFill(xinfo.screen(), fillColor); + XRenderComposite(X11->display, PictOpSrc, src, 0, picture, + 0, 0, width(), height(), + 0, 0, width(), height()); + } else +#endif + { + QImage im(width(), height(), QImage::Format_ARGB32_Premultiplied); + im.fill(PREMUL(fillColor.rgba())); + release(); + fromImage(im, Qt::AutoColor | Qt::OrderedAlphaDither); + } + return; + } + + GC gc = XCreateGC(X11->display, hd, 0, 0); + if (depth() == 1) { + XSetForeground(X11->display, gc, qGray(fillColor.rgb()) > 127 ? 0 : 1); + } else if (X11->use_xrender && d >= 24) { + XSetForeground(X11->display, gc, fillColor.rgba()); + } else { + XSetForeground(X11->display, gc, + QColormap::instance(xinfo.screen()).pixel(fillColor)); + } + XFillRectangle(X11->display, hd, gc, 0, 0, width(), height()); + XFreeGC(X11->display, gc); +} + +QX11PixmapData::~QX11PixmapData() +{ + release(); +} + +void QX11PixmapData::release() +{ + delete pengine; + pengine = 0; + + if (!X11) + return; + + if (x11_mask) { +#ifndef QT_NO_XRENDER + if (mask_picture) + XRenderFreePicture(X11->display, mask_picture); + mask_picture = 0; +#endif + XFreePixmap(X11->display, x11_mask); + x11_mask = 0; + } + + if (hd) { +#ifndef QT_NO_XRENDER + if (picture) { + XRenderFreePicture(X11->display, picture); + picture = 0; + } +#endif // QT_NO_XRENDER + + if (hd2) { + XFreePixmap(xinfo.display(), hd2); + hd2 = 0; + } + if (!read_only) + XFreePixmap(xinfo.display(), hd); + hd = 0; + } +} + +QPixmap QX11PixmapData::alphaChannel() const +{ + if (!hasAlphaChannel()) + return QPixmap(); + QImage im(toImage()); + return QPixmap::fromImage(im.alphaChannel(), Qt::OrderedDither); +} + +void QX11PixmapData::setAlphaChannel(const QPixmap &alpha) +{ + QImage image(toImage()); + image.setAlphaChannel(alpha.toImage()); + release(); + fromImage(image, Qt::OrderedDither | Qt::OrderedAlphaDither); +} + + +QBitmap QX11PixmapData::mask() const +{ + QBitmap mask; +#ifndef QT_NO_XRENDER + if (picture && d == 32) { + // #### slow - there must be a better way.. + mask = QBitmap::fromImage(toImage().createAlphaMask()); + } else +#endif + if (d == 1) { + QX11PixmapData *that = const_cast<QX11PixmapData*>(this); + mask = QPixmap(that); + } else { + mask = mask_to_bitmap(xinfo.screen()); + } + return mask; +} + + +/*! + Sets a mask bitmap. + + The \a newmask bitmap defines the clip mask for this pixmap. Every + pixel in \a newmask corresponds to a pixel in this pixmap. Pixel + value 1 means opaque and pixel value 0 means transparent. The mask + must have the same size as this pixmap. + + \warning Setting the mask on a pixmap will cause any alpha channel + data to be cleared. For example: + \snippet doc/src/snippets/image/image.cpp 2 + Now, alpha and alphacopy are visually different. + + Setting a null mask resets the mask. + + The effect of this function is undefined when the pixmap is being + painted on. + + \sa mask(), {QPixmap#Pixmap Transformations}{Pixmap + Transformations}, QBitmap +*/ +void QX11PixmapData::setMask(const QBitmap &newmask) +{ + if (newmask.isNull()) { // clear mask +#ifndef QT_NO_XRENDER + if (picture && d == 32) { + QX11PixmapData newData(pixelType()); + newData.resize(w, h); + newData.fill(Qt::black); + XRenderComposite(X11->display, PictOpOver, + picture, 0, newData.picture, + 0, 0, 0, 0, 0, 0, w, h); + release(); + *this = newData; + newData.hd = 0; + newData.x11_mask = 0; + newData.picture = 0; + newData.mask_picture = 0; + newData.hd2 = 0; + } else +#endif + if (x11_mask) { +#ifndef QT_NO_XRENDER + if (picture) { + XRenderPictureAttributes attrs; + attrs.alpha_map = 0; + XRenderChangePicture(X11->display, picture, CPAlphaMap, + &attrs); + } + if (mask_picture) + XRenderFreePicture(X11->display, mask_picture); + mask_picture = 0; +#endif + XFreePixmap(X11->display, x11_mask); + x11_mask = 0; + } + return; + } + +#ifndef QT_NO_XRENDER + if (picture && d == 32) { + XRenderComposite(X11->display, PictOpSrc, + picture, newmask.x11PictureHandle(), + picture, 0, 0, 0, 0, 0, 0, w, h); + } else +#endif + if (depth() == 1) { + XGCValues vals; + vals.function = GXand; + GC gc = XCreateGC(X11->display, hd, GCFunction, &vals); + XCopyArea(X11->display, newmask.handle(), hd, gc, 0, 0, + width(), height(), 0, 0); + XFreeGC(X11->display, gc); + } else { + // ##### should or the masks together + if (x11_mask) { + XFreePixmap(X11->display, x11_mask); +#ifndef QT_NO_XRENDER + if (mask_picture) + XRenderFreePicture(X11->display, mask_picture); +#endif + } + x11_mask = QX11PixmapData::bitmap_to_mask(newmask, xinfo.screen()); +#ifndef QT_NO_XRENDER + if (picture) { + mask_picture = XRenderCreatePicture(X11->display, x11_mask, + XRenderFindStandardFormat(X11->display, PictStandardA1), 0, 0); + XRenderPictureAttributes attrs; + attrs.alpha_map = mask_picture; + XRenderChangePicture(X11->display, picture, CPAlphaMap, &attrs); + } +#endif + } +} + +int QX11PixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const +{ + switch (metric) { + case QPaintDevice::PdmWidth: + return w; + case QPaintDevice::PdmHeight: + return h; + case QPaintDevice::PdmNumColors: + return 1 << d; + case QPaintDevice::PdmDepth: + return d; + case QPaintDevice::PdmWidthMM: { + const int screen = xinfo.screen(); + const int mm = DisplayWidthMM(X11->display, screen) * w + / DisplayWidth(X11->display, screen); + return mm; + } + case QPaintDevice::PdmHeightMM: { + const int screen = xinfo.screen(); + const int mm = (DisplayHeightMM(X11->display, screen) * h) + / DisplayHeight(X11->display, screen); + return mm; + } + case QPaintDevice::PdmDpiX: + case QPaintDevice::PdmPhysicalDpiX: + return QX11Info::appDpiX(xinfo.screen()); + case QPaintDevice::PdmDpiY: + case QPaintDevice::PdmPhysicalDpiY: + return QX11Info::appDpiY(xinfo.screen()); + default: + qWarning("QX11PixmapData::metric(): Invalid metric"); + return 0; + } +} + +/*! + Converts the pixmap to a QImage. Returns a null image if the + conversion fails. + + If the pixmap has 1-bit depth, the returned image will also be 1 + bit deep. If the pixmap has 2- to 8-bit depth, the returned image + has 8-bit depth. If the pixmap has greater than 8-bit depth, the + returned image has 32-bit depth. + + Note that for the moment, alpha masks on monochrome images are + ignored. + + \sa fromImage(), {QImage#Image Formats}{Image Formats} +*/ + +QImage QX11PixmapData::toImage() const +{ + int d = depth(); + Visual *visual = (Visual *)xinfo.visual(); + bool trucol = (visual->c_class >= TrueColor) && d > 1; + + QImage::Format format = QImage::Format_Mono; + if (d > 1 && d <= 8) { + d = 8; + format = QImage::Format_Indexed8; + } + // we could run into the situation where d == 8 AND trucol is true, which can + // cause problems when converting to and from images. in this case, always treat + // the depth as 32... + if (d > 8 || trucol) { + d = 32; + format = QImage::Format_RGB32; + } + + XImage *xi = XGetImage(X11->display, hd, 0, 0, w, h, AllPlanes, + (d == 1) ? XYPixmap : ZPixmap); + + Q_CHECK_PTR(xi); + if (!xi) + return QImage(); + + if (picture && depth() == 32) { + QImage image(w, h, QImage::Format_ARGB32_Premultiplied); + memcpy(image.bits(), xi->data, xi->bytes_per_line * xi->height); + + // we may have to swap the byte order + if ((QSysInfo::ByteOrder == QSysInfo::LittleEndian && xi->byte_order == MSBFirst) + || (QSysInfo::ByteOrder == QSysInfo::BigEndian)) + { + for (int i=0; i < image.height(); i++) { + uint *p = (uint*)image.scanLine(i); + uint *end = p + image.width(); + if ((xi->byte_order == LSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) + || (xi->byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::LittleEndian)) { + while (p < end) { + *p = ((*p << 24) & 0xff000000) | ((*p << 8) & 0x00ff0000) + | ((*p >> 8) & 0x0000ff00) | ((*p >> 24) & 0x000000ff); + p++; + } + } else if (xi->byte_order == MSBFirst && QSysInfo::ByteOrder == QSysInfo::BigEndian) { + while (p < end) { + *p = ((*p << 16) & 0x00ff0000) | ((*p >> 16) & 0x000000ff) + | ((*p ) & 0xff00ff00); + p++; + } + } + } + } + + // throw away image data + qSafeXDestroyImage(xi); + + return image; + } + + if (d == 1 && xi->bitmap_bit_order == LSBFirst) + format = QImage::Format_MonoLSB; + if (x11_mask && format == QImage::Format_RGB32) + format = QImage::Format_ARGB32; + + QImage image(w, h, format); + if (image.isNull()) // could not create image + return image; + + QImage alpha; + if (x11_mask) { + alpha = mask().toImage(); + } + bool ale = alpha.format() == QImage::Format_MonoLSB; + + if (trucol) { // truecolor + const uint red_mask = (uint)visual->red_mask; + const uint green_mask = (uint)visual->green_mask; + const uint blue_mask = (uint)visual->blue_mask; + const int red_shift = highest_bit(red_mask) - 7; + const int green_shift = highest_bit(green_mask) - 7; + const int blue_shift = highest_bit(blue_mask) - 7; + + const uint red_bits = n_bits(red_mask); + const uint green_bits = n_bits(green_mask); + const uint blue_bits = n_bits(blue_mask); + + static uint red_table_bits = 0; + static uint green_table_bits = 0; + static uint blue_table_bits = 0; + + if (red_bits < 8 && red_table_bits != red_bits) { + build_scale_table(&red_scale_table, red_bits); + red_table_bits = red_bits; + } + if (blue_bits < 8 && blue_table_bits != blue_bits) { + build_scale_table(&blue_scale_table, blue_bits); + blue_table_bits = blue_bits; + } + if (green_bits < 8 && green_table_bits != green_bits) { + build_scale_table(&green_scale_table, green_bits); + green_table_bits = green_bits; + } + + int r, g, b; + + QRgb *dst; + uchar *src; + uint pixel; + int bppc = xi->bits_per_pixel; + + if (bppc > 8 && xi->byte_order == LSBFirst) + bppc++; + + for (int y = 0; y < h; ++y) { + uchar* asrc = x11_mask ? alpha.scanLine(y) : 0; + dst = (QRgb *)image.scanLine(y); + src = (uchar *)xi->data + xi->bytes_per_line*y; + for (int x = 0; x < w; x++) { + switch (bppc) { + case 8: + pixel = *src++; + break; + case 16: // 16 bit MSB + pixel = src[1] | (uint)src[0] << 8; + src += 2; + break; + case 17: // 16 bit LSB + pixel = src[0] | (uint)src[1] << 8; + src += 2; + break; + case 24: // 24 bit MSB + pixel = src[2] | (uint)src[1] << 8 | (uint)src[0] << 16; + src += 3; + break; + case 25: // 24 bit LSB + pixel = src[0] | (uint)src[1] << 8 | (uint)src[2] << 16; + src += 3; + break; + case 32: // 32 bit MSB + pixel = src[3] | (uint)src[2] << 8 | (uint)src[1] << 16 | (uint)src[0] << 24; + src += 4; + break; + case 33: // 32 bit LSB + pixel = src[0] | (uint)src[1] << 8 | (uint)src[2] << 16 | (uint)src[3] << 24; + src += 4; + break; + default: // should not really happen + x = w; // leave loop + y = h; + pixel = 0; // eliminate compiler warning + qWarning("QPixmap::convertToImage: Invalid depth %d", bppc); + } + if (red_shift > 0) + r = (pixel & red_mask) >> red_shift; + else + r = (pixel & red_mask) << -red_shift; + if (green_shift > 0) + g = (pixel & green_mask) >> green_shift; + else + g = (pixel & green_mask) << -green_shift; + if (blue_shift > 0) + b = (pixel & blue_mask) >> blue_shift; + else + b = (pixel & blue_mask) << -blue_shift; + + if (red_bits < 8) + r = red_scale_table[r]; + if (green_bits < 8) + g = green_scale_table[g]; + if (blue_bits < 8) + b = blue_scale_table[b]; + + if (x11_mask) { + if (ale) { + *dst++ = (asrc[x >> 3] & (1 << (x & 7))) ? qRgba(r, g, b, 0xff) : 0; + } else { + *dst++ = (asrc[x >> 3] & (0x80 >> (x & 7))) ? qRgba(r, g, b, 0xff) : 0; + } + } else { + *dst++ = qRgb(r, g, b); + } + } + } + } else if (xi->bits_per_pixel == d) { // compatible depth + char *xidata = xi->data; // copy each scanline + int bpl = qMin(image.bytesPerLine(),xi->bytes_per_line); + for (int y=0; y<h; y++) { + memcpy(image.scanLine(y), xidata, bpl); + xidata += xi->bytes_per_line; + } + } else { + /* Typically 2 or 4 bits display depth */ + qWarning("QPixmap::convertToImage: Display not supported (bpp=%d)", + xi->bits_per_pixel); + return QImage(); + } + + if (d == 1) { // bitmap + image.setNumColors(2); + image.setColor(0, qRgb(255,255,255)); + image.setColor(1, qRgb(0,0,0)); + } else if (!trucol) { // pixmap with colormap + register uchar *p; + uchar *end; + uchar use[256]; // pixel-in-use table + uchar pix[256]; // pixel translation table + int ncols, bpl; + memset(use, 0, 256); + memset(pix, 0, 256); + bpl = image.bytesPerLine(); + + if (x11_mask) { // which pixels are used? + for (int i = 0; i < h; i++) { + uchar* asrc = alpha.scanLine(i); + p = image.scanLine(i); + if (ale) { + for (int x = 0; x < w; x++) { + if (asrc[x >> 3] & (1 << (x & 7))) + use[*p] = 1; + ++p; + } + } else { + for (int x = 0; x < w; x++) { + if (asrc[x >> 3] & (0x80 >> (x & 7))) + use[*p] = 1; + ++p; + } + } + } + } else { + for (int i = 0; i < h; i++) { + p = image.scanLine(i); + end = p + bpl; + while (p < end) + use[*p++] = 1; + } + } + ncols = 0; + for (int i = 0; i < 256; i++) { // build translation table + if (use[i]) + pix[i] = ncols++; + } + for (int i = 0; i < h; i++) { // translate pixels + p = image.scanLine(i); + end = p + bpl; + while (p < end) { + *p = pix[*p]; + p++; + } + } + if (x11_mask) { + int trans; + if (ncols < 256) { + trans = ncols++; + image.setNumColors(ncols); // create color table + image.setColor(trans, 0x00000000); + } else { + image.setNumColors(ncols); // create color table + // oh dear... no spare "transparent" pixel. + // use first pixel in image (as good as any). + trans = image.scanLine(0)[0]; + } + for (int i = 0; i < h; i++) { + uchar* asrc = alpha.scanLine(i); + p = image.scanLine(i); + if (ale) { + for (int x = 0; x < w; x++) { + if (!(asrc[x >> 3] & (1 << (x & 7)))) + *p = trans; + ++p; + } + } else { + for (int x = 0; x < w; x++) { + if (!(asrc[x >> 3] & (1 << (7 -(x & 7))))) + *p = trans; + ++p; + } + } + } + } else { + image.setNumColors(ncols); // create color table + } + QVector<QColor> colors = QColormap::instance(xinfo.screen()).colormap(); + int j = 0; + for (int i=0; i<colors.size(); i++) { // translate pixels + if (use[i]) + image.setColor(j++, 0xff000000 | colors.at(i).rgb()); + } + } + + qSafeXDestroyImage(xi); + + return image; +} + +/*! + Returns a copy of the pixmap that is transformed using the given + transformation \a matrix and transformation \a mode. The original + pixmap is not changed. + + The transformation \a matrix is internally adjusted to compensate + for unwanted translation; i.e. the pixmap produced is the smallest + pixmap that contains all the transformed points of the original + pixmap. Use the trueMatrix() function to retrieve the actual + matrix used for transforming the pixmap. + + This function is slow because it involves transformation to a + QImage, non-trivial computations and a transformation back to a + QPixmap. + + \sa trueMatrix(), {QPixmap#Pixmap Transformations}{Pixmap + Transformations} +*/ +QPixmap QX11PixmapData::transformed(const QTransform &transform, + Qt::TransformationMode mode ) const +{ + if (mode == Qt::SmoothTransformation || transform.type() >= QTransform::TxProject) { + QImage image = toImage(); + return QPixmap::fromImage(image.transformed(transform, mode)); + } + + uint w = 0; + uint h = 0; // size of target pixmap + uint ws, hs; // size of source pixmap + uchar *dptr; // data in target pixmap + uint dbpl, dbytes; // bytes per line/bytes total + uchar *sptr; // data in original pixmap + int sbpl; // bytes per line in original + int bpp; // bits per pixel + bool depth1 = depth() == 1; + Display *dpy = X11->display; + + ws = width(); + hs = height(); + + QTransform mat(transform.m11(), transform.m12(), transform.m13(), + transform.m21(), transform.m22(), transform.m23(), + 0., 0., 1); + bool complex_xform = false; + qreal scaledWidth; + qreal scaledHeight; + + if (mat.type() <= QTransform::TxScale) { + scaledHeight = qAbs(mat.m22()) * hs + 0.9999; + scaledWidth = qAbs(mat.m11()) * ws + 0.9999; + h = qAbs(int(scaledHeight)); + w = qAbs(int(scaledWidth)); + } else { // rotation or shearing + QPolygonF a(QRectF(0, 0, ws, hs)); + a = mat.map(a); + QRect r = a.boundingRect().toAlignedRect(); + w = r.width(); + h = r.height(); + scaledWidth = w; + scaledHeight = h; + complex_xform = true; + } + mat = QPixmap::trueMatrix(mat, ws, hs); // true matrix + + bool invertible; + mat = mat.inverted(&invertible); // invert matrix + + if (h == 0 || w == 0 || !invertible + || qAbs(scaledWidth) >= 32768 || qAbs(scaledHeight) >= 32768 ) + // error, return null pixmap + return QPixmap(); + +#if defined(QT_MITSHM) + static bool try_once = true; + if (try_once) { + try_once = false; + if (!xshminit) + qt_create_mitshm_buffer(this, 800, 600); + } + + bool use_mitshm = xshmimg && !depth1 && + xshmimg->width >= w && xshmimg->height >= h; +#endif + XImage *xi = XGetImage(X11->display, handle(), 0, 0, ws, hs, AllPlanes, + depth1 ? XYPixmap : ZPixmap); + + if (!xi) + return QPixmap(); + + sbpl = xi->bytes_per_line; + sptr = (uchar *)xi->data; + bpp = xi->bits_per_pixel; + + if (depth1) + dbpl = (w+7)/8; + else + dbpl = ((w*bpp+31)/32)*4; + dbytes = dbpl*h; + +#if defined(QT_MITSHM) + if (use_mitshm) { + dptr = (uchar *)xshmimg->data; + uchar fillbyte = bpp == 8 ? white.pixel() : 0xff; + for (int y=0; y<h; y++) + memset(dptr + y*xshmimg->bytes_per_line, fillbyte, dbpl); + } else { +#endif + dptr = (uchar *)malloc(dbytes); // create buffer for bits + Q_CHECK_PTR(dptr); + if (depth1) // fill with zeros + memset(dptr, 0, dbytes); + else if (bpp == 8) // fill with background color + memset(dptr, WhitePixel(X11->display, xinfo.screen()), dbytes); + else + memset(dptr, 0, dbytes); +#if defined(QT_MITSHM) + } +#endif + + // #define QT_DEBUG_XIMAGE +#if defined(QT_DEBUG_XIMAGE) + qDebug("----IMAGE--INFO--------------"); + qDebug("width............. %d", xi->width); + qDebug("height............ %d", xi->height); + qDebug("xoffset........... %d", xi->xoffset); + qDebug("format............ %d", xi->format); + qDebug("byte order........ %d", xi->byte_order); + qDebug("bitmap unit....... %d", xi->bitmap_unit); + qDebug("bitmap bit order.. %d", xi->bitmap_bit_order); + qDebug("depth............. %d", xi->depth); + qDebug("bytes per line.... %d", xi->bytes_per_line); + qDebug("bits per pixel.... %d", xi->bits_per_pixel); +#endif + + int type; + if (xi->bitmap_bit_order == MSBFirst) + type = QT_XFORM_TYPE_MSBFIRST; + else + type = QT_XFORM_TYPE_LSBFIRST; + int xbpl, p_inc; + if (depth1) { + xbpl = (w+7)/8; + p_inc = dbpl - xbpl; + } else { + xbpl = (w*bpp)/8; + p_inc = dbpl - xbpl; +#if defined(QT_MITSHM) + if (use_mitshm) + p_inc = xshmimg->bytes_per_line - xbpl; +#endif + } + + if (!qt_xForm_helper(mat, xi->xoffset, type, bpp, dptr, xbpl, p_inc, h, sptr, sbpl, ws, hs)){ + qWarning("QPixmap::transform: display not supported (bpp=%d)",bpp); + QPixmap pm; + return pm; + } + + qSafeXDestroyImage(xi); + + if (depth1) { // mono bitmap + QBitmap bm = QBitmap::fromData(QSize(w, h), dptr, + BitmapBitOrder(X11->display) == MSBFirst + ? QImage::Format_Mono + : QImage::Format_MonoLSB); + free(dptr); + return bm; + } else { // color pixmap + QPixmap pm; + QX11PixmapData *x11Data = static_cast<QX11PixmapData*>(pm.data); + x11Data->uninit = false; + x11Data->xinfo = xinfo; + x11Data->d = d; + x11Data->w = w; + x11Data->h = h; + x11Data->hd = (Qt::HANDLE)XCreatePixmap(X11->display, + RootWindow(X11->display, xinfo.screen()), + w, h, d); +#ifndef QT_NO_XRENDER + if (X11->use_xrender) { + XRenderPictFormat *format = x11Data->d == 32 + ? XRenderFindStandardFormat(X11->display, PictStandardARGB32) + : XRenderFindVisualFormat(X11->display, (Visual *) x11Data->xinfo.visual()); + x11Data->picture = XRenderCreatePicture(X11->display, x11Data->hd, format, 0, 0); + } +#endif // QT_NO_XRENDER + + GC gc = XCreateGC(X11->display, x11Data->hd, 0, 0); +#if defined(QT_MITSHM) + if (use_mitshm) { + XCopyArea(dpy, xshmpm, x11Data->hd, gc, 0, 0, w, h, 0, 0); + } else +#endif + { + xi = XCreateImage(dpy, (Visual*)x11Data->xinfo.visual(), + x11Data->d, + ZPixmap, 0, (char *)dptr, w, h, 32, 0); + XPutImage(dpy, pm.handle(), gc, xi, 0, 0, 0, 0, w, h); + qSafeXDestroyImage(xi); + } + XFreeGC(X11->display, gc); + + if (x11_mask) { // xform mask, too + pm.setMask(mask_to_bitmap(xinfo.screen()).transformed(transform)); + } else if (d != 32 && complex_xform) { // need a mask! + QBitmap mask(ws, hs); + mask.fill(Qt::color1); + pm.setMask(mask.transformed(transform)); + } + return pm; + } +} + +/*! + \internal +*/ +int QPixmap::x11SetDefaultScreen(int screen) +{ + int old = defaultScreen; + defaultScreen = screen; + return old; +} + +/*! + \internal +*/ +void QPixmap::x11SetScreen(int screen) +{ + if (paintingActive()) { + qWarning("QPixmap::x11SetScreen(): Cannot change screens during painting"); + return; + } + + if (data->classId() != QPixmapData::X11Class) + return; + + if (screen < 0) + screen = QX11Info::appScreen(); + + QX11PixmapData *x11Data = static_cast<QX11PixmapData*>(data); + if (screen == x11Data->xinfo.screen()) + return; // nothing to do + + if (isNull()) { + QX11InfoData* xd = x11Data->xinfo.getX11Data(true); + xd->screen = screen; + xd->depth = QX11Info::appDepth(screen); + xd->cells = QX11Info::appCells(screen); + xd->colormap = QX11Info::appColormap(screen); + xd->defaultColormap = QX11Info::appDefaultColormap(screen); + xd->visual = (Visual *)QX11Info::appVisual(screen); + xd->defaultVisual = QX11Info::appDefaultVisual(screen); + x11Data->xinfo.setX11Data(xd); + return; + } +#if 0 + qDebug("QPixmap::x11SetScreen for %p from %d to %d. Size is %d/%d", x11Data, x11Data->xinfo.screen(), screen, width(), height()); +#endif + + x11SetDefaultScreen(screen); + *this = qt_toX11Pixmap(toImage()); +} + +QPixmap QPixmap::grabWindow(WId window, int x, int y, int w, int h) +{ + if (w == 0 || h == 0) + return QPixmap(); + + Display *dpy = X11->display; + XWindowAttributes window_attr; + if (!XGetWindowAttributes(dpy, window, &window_attr)) + return QPixmap(); + + if (w < 0) + w = window_attr.width - x; + if (h < 0) + h = window_attr.height - y; + + // determine the screen + int scr; + for (scr = 0; scr < ScreenCount(dpy); ++scr) { + if (window_attr.root == RootWindow(dpy, scr)) // found it + break; + } + if (scr >= ScreenCount(dpy)) // sanity check + return QPixmap(); + + + // get the depth of the root window + XWindowAttributes root_attr; + if (!XGetWindowAttributes(dpy, window_attr.root, &root_attr)) + return QPixmap(); + + if (window_attr.depth == root_attr.depth) { + // if the depth of the specified window and the root window are the + // same, grab pixels from the root window (so that we get the any + // overlapping windows and window manager frames) + + // map x and y to the root window + WId unused; + if (!XTranslateCoordinates(dpy, window, window_attr.root, x, y, + &x, &y, &unused)) + return QPixmap(); + + window = window_attr.root; + window_attr = root_attr; + } + + QX11PixmapData *data = new QX11PixmapData(QPixmapData::PixmapType); + + void qt_x11_getX11InfoForWindow(QX11Info * xinfo, const XWindowAttributes &a); + qt_x11_getX11InfoForWindow(&data->xinfo,window_attr); + + data->resize(w, h); + + QPixmap pm(data); + + data->uninit = false; + pm.x11SetScreen(scr); + + GC gc = XCreateGC(dpy, pm.handle(), 0, 0); + XSetSubwindowMode(dpy, gc, IncludeInferiors); + XCopyArea(dpy, window, pm.handle(), gc, x, y, w, h, 0, 0); + XFreeGC(dpy, gc); + + return pm; +} + +bool QX11PixmapData::hasAlphaChannel() const +{ + return d == 32; +} + +/*! + Returns information about the configuration of the X display used to display + the widget. + + \warning This function is only available on X11. + + \sa {QPixmap#Pixmap Information}{Pixmap Information} +*/ +const QX11Info &QPixmap::x11Info() const +{ + if (data->classId() == QPixmapData::X11Class) + return static_cast<QX11PixmapData*>(data)->xinfo; + else { + static QX11Info nullX11Info; + return nullX11Info; + } +} + +#if !defined(QT_NO_XRENDER) +static XRenderPictFormat *qt_renderformat_for_depth(const QX11Info &xinfo, int depth) +{ + if (depth == 1) + return XRenderFindStandardFormat(X11->display, PictStandardA1); + else if (depth == 32) + return XRenderFindStandardFormat(X11->display, PictStandardARGB32); + else + return XRenderFindVisualFormat(X11->display, (Visual *)xinfo.visual()); +} +#endif + +QPaintEngine* QX11PixmapData::paintEngine() const +{ + QX11PixmapData *that = const_cast<QX11PixmapData*>(this); + + if (read_only && share_mode == QPixmap::ImplicitlyShared) { + // if someone wants to draw onto us, copy the shared contents + // and turn it into a fully fledged QPixmap + ::Pixmap hd_copy = XCreatePixmap(X11->display, RootWindow(X11->display, xinfo.screen()), + w, h, d); +#if !defined(QT_NO_XRENDER) + XRenderPictFormat *format = qt_renderformat_for_depth(xinfo, d); + ::Picture picture_copy = XRenderCreatePicture(X11->display, hd_copy, format, 0, 0); + + if (picture && d == 32) { + XRenderComposite(X11->display, PictOpSrc, picture, 0, picture_copy, + 0, 0, 0, 0, 0, 0, w, h); + XRenderFreePicture(X11->display, picture); + that->picture = picture_copy; + } else +#endif + { + GC gc = XCreateGC(X11->display, hd_copy, 0, 0); + XCopyArea(X11->display, hd, hd_copy, gc, 0, 0, w, h, 0, 0); + XFreeGC(X11->display, gc); + } + that->hd = hd_copy; + that->read_only = false; + } + + if (!that->pengine) + that->pengine = new QX11PaintEngine; + return that->pengine; +} + +/*! + Returns the X11 Picture handle of the pixmap for XRender + support. + + This function will return 0 if XRender support is not compiled + into Qt, if the XRender extension is not supported on the X11 + display, or if the handle could not be created. Use of this + function is not portable. + + \warning This function is only available on X11. + + \sa {QPixmap#Pixmap Information}{Pixmap Information} +*/ + +Qt::HANDLE QPixmap::x11PictureHandle() const +{ +#ifndef QT_NO_XRENDER + if (data->classId() == QPixmapData::X11Class) + return static_cast<QX11PixmapData*>(data)->picture; + else + return 0; +#else + return 0; +#endif // QT_NO_XRENDER +} + +Qt::HANDLE QX11PixmapData::x11ConvertToDefaultDepth() +{ +#ifndef QT_NO_XRENDER + if (d == QX11Info::appDepth() || !X11->use_xrender) + return hd; + if (!hd2) { + hd2 = XCreatePixmap(xinfo.display(), hd, w, h, QX11Info::appDepth()); + XRenderPictFormat *format = XRenderFindVisualFormat(xinfo.display(), + (Visual*) xinfo.visual()); + Picture pic = XRenderCreatePicture(xinfo.display(), hd2, format, 0, 0); + XRenderComposite(xinfo.display(), PictOpSrc, picture, + XNone, pic, 0, 0, 0, 0, 0, 0, w, h); + XRenderFreePicture(xinfo.display(), pic); + } + return hd2; +#else + return hd; +#endif +} + +void QX11PixmapData::copy(const QPixmapData *data, const QRect &rect) +{ + if (data->pixelType() == BitmapType) { + fromImage(data->toImage().copy(rect), Qt::AutoColor); + return; + } + + const QX11PixmapData *x11Data = static_cast<const QX11PixmapData*>(data); + + setSerialNumber(++qt_pixmap_serial); + + uninit = false; + xinfo = x11Data->xinfo; + d = x11Data->d; + w = rect.width(); + h = rect.height(); + hd = (Qt::HANDLE)XCreatePixmap(X11->display, + RootWindow(X11->display, x11Data->xinfo.screen()), + w, h, d); +#ifndef QT_NO_XRENDER + if (X11->use_xrender) { + XRenderPictFormat *format = d == 32 + ? XRenderFindStandardFormat(X11->display, PictStandardARGB32) + : XRenderFindVisualFormat(X11->display, (Visual *)xinfo.visual()); + picture = XRenderCreatePicture(X11->display, hd, format, 0, 0); + } +#endif // QT_NO_XRENDER + if (x11Data->x11_mask) { + x11_mask = XCreatePixmap(X11->display, hd, w, h, 1); +#ifndef QT_NO_XRENDER + if (X11->use_xrender) { + mask_picture = XRenderCreatePicture(X11->display, x11_mask, + XRenderFindStandardFormat(X11->display, PictStandardA1), 0, 0); + XRenderPictureAttributes attrs; + attrs.alpha_map = x11Data->mask_picture; + XRenderChangePicture(X11->display, x11Data->picture, CPAlphaMap, &attrs); + } +#endif + } + +#if !defined(QT_NO_XRENDER) + if (x11Data->picture && x11Data->d == 32) { + XRenderComposite(X11->display, PictOpSrc, + x11Data->picture, 0, picture, + rect.x(), rect.y(), 0, 0, 0, 0, w, h); + } else +#endif + { + GC gc = XCreateGC(X11->display, hd, 0, 0); + XCopyArea(X11->display, x11Data->hd, hd, gc, + rect.x(), rect.y(), w, h, 0, 0); + if (x11Data->x11_mask) { + GC monogc = XCreateGC(X11->display, x11_mask, 0, 0); + XCopyArea(X11->display, x11Data->x11_mask, x11_mask, monogc, + rect.x(), rect.y(), w, h, 0, 0); + XFreeGC(X11->display, monogc); + } + XFreeGC(X11->display, gc); + } +} + +#if !defined(QT_NO_XRENDER) +void QX11PixmapData::convertToARGB32(bool preserveContents) +{ + if (!X11->use_xrender) + return; + + // Q_ASSERT(count == 1); + if (read_only && share_mode == QPixmap::ExplicitlyShared) + return; + + Pixmap pm = XCreatePixmap(X11->display, RootWindow(X11->display, xinfo.screen()), + w, h, 32); + Picture p = XRenderCreatePicture(X11->display, pm, + XRenderFindStandardFormat(X11->display, PictStandardARGB32), 0, 0); + if (picture) { + if (preserveContents) + XRenderComposite(X11->display, PictOpSrc, picture, 0, p, 0, 0, 0, 0, 0, 0, w, h); + if (!read_only) + XRenderFreePicture(X11->display, picture); + } + if (hd && !read_only) + XFreePixmap(X11->display, hd); + if (x11_mask) { + XFreePixmap(X11->display, x11_mask); + if (mask_picture) + XRenderFreePicture(X11->display, mask_picture); + x11_mask = 0; + mask_picture = 0; + } + hd = pm; + picture = p; + d = 32; +} +#endif + +QPixmap QPixmap::fromX11Pixmap(Qt::HANDLE pixmap, QPixmap::ShareMode mode) +{ + Window root; + int x; + int y; + uint width; + uint height; + uint border_width; + uint depth; + XWindowAttributes win_attribs; + int num_screens = ScreenCount(X11->display); + int screen = 0; + + XGetGeometry(X11->display, pixmap, &root, &x, &y, &width, &height, &border_width, &depth); + XGetWindowAttributes(X11->display, root, &win_attribs); + + for (; screen < num_screens; ++screen) { + if (win_attribs.screen == ScreenOfDisplay(X11->display, screen)) + break; + } + + QX11PixmapData *data = new QX11PixmapData(depth == 1 ? QPixmapData::BitmapType : QPixmapData::PixmapType); + data->setSerialNumber(++qt_pixmap_serial); + data->read_only = true; + data->share_mode = mode; + data->uninit = false; + data->w = width; + data->h = height; + data->d = depth; + data->hd = pixmap; + + if (defaultScreen >= 0 && defaultScreen != screen) { + QX11InfoData* xd = data->xinfo.getX11Data(true); + xd->screen = defaultScreen; + xd->depth = QX11Info::appDepth(xd->screen); + xd->cells = QX11Info::appCells(xd->screen); + xd->colormap = QX11Info::appColormap(xd->screen); + xd->defaultColormap = QX11Info::appDefaultColormap(xd->screen); + xd->visual = (Visual *)QX11Info::appVisual(xd->screen); + xd->defaultVisual = QX11Info::appDefaultVisual(xd->screen); + data->xinfo.setX11Data(xd); + } + +#ifndef QT_NO_XRENDER + if (X11->use_xrender) { + XRenderPictFormat *format = qt_renderformat_for_depth(data->xinfo, depth); + data->picture = XRenderCreatePicture(X11->display, data->hd, format, 0, 0); + } +#endif // QT_NO_XRENDER + + return QPixmap(data); +} + + +QT_END_NAMESPACE |