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-rw-r--r--src/gui/painting/qregion_win.cpp514
1 files changed, 44 insertions, 470 deletions
diff --git a/src/gui/painting/qregion_win.cpp b/src/gui/painting/qregion_win.cpp
index 249b1a6..2d5e76b 100644
--- a/src/gui/painting/qregion_win.cpp
+++ b/src/gui/painting/qregion_win.cpp
@@ -39,27 +39,25 @@
**
****************************************************************************/
+#include "qatomic.h"
#include "qbitmap.h"
#include "qbuffer.h"
#include "qimage.h"
#include "qpolygon.h"
#include "qregion.h"
#include "qt_windows.h"
+#include "qpainterpath.h"
+#include "qguifunctions_wince.h"
QT_BEGIN_NAMESPACE
+QRegion::QRegionData QRegion::shared_empty = { Q_BASIC_ATOMIC_INITIALIZER(1), 0, 0 };
-/*
- In Windows versions before Windows Vista CreateRectRgn - when called in a multi-threaded
- environment - might return an invalid handle. This function works around this limitation
- by verifying the handle with a quick GetRegionData() call and re-creates the region
- if necessary.
-*/
HRGN qt_tryCreateRegion(QRegion::RegionType type, int left, int top, int right, int bottom)
{
const int tries = 10;
for (int i = 0; i < tries; ++i) {
- HRGN region = 0;
+ HRGN region;
switch (type) {
case QRegion::Rectangle:
region = CreateRectRgn(left, top, right, bottom);
@@ -80,497 +78,73 @@ HRGN qt_tryCreateRegion(QRegion::RegionType type, int left, int top, int right,
return 0;
}
-#ifndef Q_OS_WINCE
-HRGN qt_tryCreatePolygonRegion(const QPolygon &a, Qt::FillRule fillRule)
-{
- const int tries = 10;
- for (int i = 0; i < tries; ++i) {
- HRGN region = CreatePolygonRgn(reinterpret_cast<const POINT*>(a.data()), a.size(),
- fillRule == Qt::OddEvenFill ? ALTERNATE : WINDING);
- if (region) {
- if (GetRegionData(region, 0, 0))
- return region;
- else
- DeleteObject(region);
- }
- }
- return 0;
-}
-#endif
-
-QRegion::QRegionData QRegion::shared_empty = { Q_BASIC_ATOMIC_INITIALIZER(1), 0 };
-
-QRegion::QRegion()
- : d(&shared_empty)
-{
- d->ref.ref();
-}
-
-#ifndef Q_OS_WINCE //implementation for WindowsCE in qregion_wce.cpp
-QRegion::QRegion(const QRect &r, RegionType t)
-{
- if (r.isEmpty()) {
- d = &shared_empty;
- d->ref.ref();
- } else {
- d = new QRegionData;
- d->ref = 1;
- if (t == Rectangle)
- d->rgn = qt_tryCreateRegion(t, r.left(), r.top(), r.x() + r.width(), r.y() + r.height());
- else if (t == Ellipse) {
- // need to add 1 to width/height for the ellipse to have correct boundingrect.
- d->rgn = qt_tryCreateRegion(t, r.x(), r.y(), r.x() + r.width() + 1, r.y() + r.height() + 1);
- }
- }
-}
-#endif
-
-#ifndef Q_OS_WINCE //implementation for WindowsCE in qregion_wce.cpp
-QRegion::QRegion(const QPolygon &a, Qt::FillRule fillRule)
-{
- if (a.size() < 3) {
- d = &shared_empty;
- d->ref.ref();
- } else {
- d = new QRegionData;
- d->ref = 1;
- d->rgn = qt_tryCreatePolygonRegion(a, fillRule);
- }
-}
-#endif
-
-QRegion::QRegion(const QRegion &r)
-{
- d = r.d;
- d->ref.ref();
-}
-
-HRGN qt_win_bitmapToRegion(const QBitmap& bitmap)
-{
- HRGN region=0;
- QImage image = bitmap.toImage();
- const int MAXRECT = 256;
- struct RData {
- RGNDATAHEADER header;
- RECT rect[MAXRECT];
- };
- RData data;
-
-#define FlushSpans \
- { \
- data.header.dwSize = sizeof(RGNDATAHEADER); \
- data.header.iType = RDH_RECTANGLES; \
- data.header.nCount = n; \
- data.header.nRgnSize = 0; \
- data.header.rcBound.bottom = y; \
- HRGN r = ExtCreateRegion(0, \
- sizeof(RGNDATAHEADER)+n*sizeof(RECT),(RGNDATA*)&data); \
- if (region) { \
- CombineRgn(region, region, r, RGN_OR); \
- DeleteObject(r); \
- } else { \
- region = r; \
- } \
- data.header.rcBound.top = y; \
- }
-
-#define AddSpan \
- { \
- data.rect[n].left=prev1; \
- data.rect[n].top=y; \
- data.rect[n].right=x-1+1; \
- data.rect[n].bottom=y+1; \
- n++; \
- if (n == MAXRECT) { \
- FlushSpans \
- n=0; \
- } \
- }
-
- data.header.rcBound.top = 0;
- data.header.rcBound.left = 0;
- data.header.rcBound.right = image.width()-1;
- int n = 0;
-
- int zero = 0x00;
-
- int x, y;
- for (y = 0; y < image.height(); ++y) {
- uchar *line = image.scanLine(y);
- int w = image.width();
- uchar all=zero;
- int prev1 = -1;
- for (x = 0; x < w;) {
- uchar byte = line[x/8];
- if (x > w - 8 || byte != all) {
- for (int b = 8; b > 0 && x < w; --b) {
- if (!(byte & 0x01) == !all) {
- // More of the same
- } else {
- // A change.
- if (all != zero) {
- AddSpan;
- all = zero;
- } else {
- prev1 = x;
- all = ~zero;
- }
- }
- byte >>= 1;
- ++x;
- }
- } else {
- x += 8;
- }
- }
- if (all != zero) {
- AddSpan;
- }
- }
- if (n) {
- FlushSpans;
- }
-
- if (!region) {
- // Surely there is some better way.
- region = qt_tryCreateRegion(QRegion::Rectangle, 0,0,1,1);
- CombineRgn(region, region, region, RGN_XOR);
- }
- return region;
-}
-
-#ifndef Q_OS_WINCE //implementation for WindowsCE in qregion_wce.cpp
-QRegion::QRegion(const QBitmap &bm)
-{
- if (bm.isNull()) {
- d = &shared_empty;
- d->ref.ref();
- } else {
- d = new QRegionData;
- d->ref = 1;
- d->rgn = qt_win_bitmapToRegion(bm);
- }
-}
-#endif
-
-void QRegion::cleanUp(QRegion::QRegionData *x)
-{
- if (x->rgn)
- DeleteObject(x->rgn);
- delete x;
-}
-
-QRegion::~QRegion()
-{
- if (!d->ref.deref())
- cleanUp(d);
-}
-
-QRegion &QRegion::operator=(const QRegion &r)
-{
- r.d->ref.ref();
- if (!d->ref.deref())
- cleanUp(d);
- d = r.d;
- return *this;
-}
-
-
-QRegion QRegion::copy() const
-{
- QRegion r;
- QRegionData *x = new QRegionData;
- x->ref = 1;
- if (d->rgn) {
- x->rgn = qt_tryCreateRegion(QRegion::Rectangle, 0, 0, 2, 2);
- CombineRgn(x->rgn, d->rgn, 0, RGN_COPY);
- } else {
- x->rgn = 0;
- }
- if (!r.d->ref.deref())
- cleanUp(r.d);
- r.d = x;
- return r;
-}
-
-bool QRegion::isEmpty() const
-{
- return (d == &shared_empty || boundingRect().isEmpty());
-}
-
-
-bool QRegion::contains(const QPoint &p) const
-{
- return d->rgn ? PtInRegion(d->rgn, p.x(), p.y()) : false;
-}
-
-bool QRegion::contains(const QRect &r) const
-{
- if (!d->rgn)
- return false;
- RECT rect;
- SetRect(&rect, r.left(), r.top(), r.right(), r.bottom());
- return RectInRegion(d->rgn, &rect);
-}
-
-
-void QRegion::translate(int dx, int dy)
-{
- if (!d->rgn || (dx == 0 && dy == 0))
- return;
- detach();
- OffsetRgn(d->rgn, dx, dy);
-}
-
-
-#define RGN_NOP -1
-
-// Duplicates of those in qregion.cpp
-#define QRGN_OR 6
-#define QRGN_AND 7
-#define QRGN_SUB 8
-#define QRGN_XOR 9
-
-/*
- Performs the actual OR, AND, SUB and XOR operation between regions.
- Sets the resulting region handle to 0 to indicate an empty region.
-*/
-
-QRegion QRegion::winCombine(const QRegion &r, int op) const
+QRegion qt_region_from_HRGN(HRGN rgn)
{
- int both=RGN_NOP,
- left=RGN_NOP,
- right=RGN_NOP;
- switch (op) {
- case QRGN_OR:
- both = RGN_OR;
- left = right = RGN_COPY;
- break;
- case QRGN_AND:
- both = RGN_AND;
- break;
- case QRGN_SUB:
- both = RGN_DIFF;
- left = RGN_COPY;
- break;
- case QRGN_XOR:
- both = RGN_XOR;
- left = right = RGN_COPY;
- break;
- default:
- qWarning("QRegion: Internal error in winCombine");
- }
-
- int allCombineRgnResults = NULLREGION;
- QRegion result;
- result.detach();
- result.d->rgn = qt_tryCreateRegion(QRegion::Rectangle, 0, 0, 0, 0);
- if (d->rgn && r.d->rgn)
- allCombineRgnResults = CombineRgn(result.d->rgn, d->rgn, r.d->rgn, both);
- else if (d->rgn && left != RGN_NOP)
- allCombineRgnResults = CombineRgn(result.d->rgn, d->rgn, d->rgn, left);
- else if (r.d->rgn && right != RGN_NOP)
- allCombineRgnResults = CombineRgn(result.d->rgn, r.d->rgn, r.d->rgn, right);
-
- if (allCombineRgnResults == NULLREGION || allCombineRgnResults == ERROR)
- result = QRegion();
-
- //##### do not delete this. A null pointer is different from an empty region in SelectClipRgn in qpainter_win! (M)
-// if (allCombineRgnResults == NULLREGION) {
-// if (result.data->rgn)
-// DeleteObject(result.data->rgn);
-// result.data->rgn = 0; // empty region
-// }
- return result;
-}
-
-QRegion QRegion::unite(const QRegion &r) const
-{
- if (!d->rgn)
- return r;
- if (!r.d->rgn)
- return *this;
- return winCombine(r, QRGN_OR);
-}
-
-QRegion QRegion::unite(const QRect &r) const
-{
- return unite(QRegion(r));
-}
-
-QRegion QRegion::intersect(const QRegion &r) const
-{
- if (!r.d->rgn || !d->rgn)
- return QRegion();
- return winCombine(r, QRGN_AND);
-}
-
-QRegion QRegion::subtract(const QRegion &r) const
-{
- if (!r.d->rgn || !d->rgn)
- return *this;
- return winCombine(r, QRGN_SUB);
-}
-
-QRegion QRegion::eor(const QRegion &r) const
-{
- if (!d->rgn)
- return r;
- if (!r.d->rgn)
- return *this;
- return winCombine(r, QRGN_XOR);
-}
-
-
-QRect QRegion::boundingRect() const
-{
- if (!d->rgn)
- return QRect();
- RECT r;
- if (GetRgnBox(d->rgn, &r) == NULLREGION)
- return QRect();
- else
- return QRect(r.left, r.top, r.right - r.left, r.bottom - r.top);
-}
-
-QVector<QRect> QRegion::rects() const
-{
- if (d->rgn == 0)
- return QVector<QRect>();
-
- int numBytes = GetRegionData(d->rgn, 0, 0);
+ int numBytes = GetRegionData(rgn, 0, 0);
if (numBytes == 0)
- return QVector<QRect>();
+ return QRegion();
char *buf = new char[numBytes];
if (buf == 0)
- return QVector<QRect>();
+ return QRegion();
RGNDATA *rd = reinterpret_cast<RGNDATA*>(buf);
- if (GetRegionData(d->rgn, numBytes, rd) == 0) {
+ if (GetRegionData(rgn, numBytes, rd) == 0) {
delete [] buf;
- return QVector<QRect>();
+ return QRegion();
}
- QVector<QRect> a(rd->rdh.nCount);
+ QRegion region;
RECT *r = reinterpret_cast<RECT*>(rd->Buffer);
- for (int i = 0; i < a.size(); ++i) {
- a[i].setCoords(r->left, r->top, r->right - 1, r->bottom - 1);
+ for (int i = 0; i < rd->rdh.nCount; ++i) {
+ QRect rect;
+ rect.setCoords(r->left, r->top, r->right - 1, r->bottom - 1);
++r;
+ region |= rect;
}
delete [] buf;
- return a;
-}
-
-void QRegion::setRects(const QRect *rects, int num)
-{
- *this = QRegion();
- if (!rects || num == 0 || (num == 1 && rects->isEmpty()))
- return;
- for (int i = 0; i < num; ++i)
- *this |= rects[i];
-}
-
-int QRegion::numRects() const
-{
- if (d->rgn == 0)
- return 0;
-
- const int numBytes = GetRegionData(d->rgn, 0, 0);
- if (numBytes == 0)
- return 0;
-
- char *buf = new char[numBytes];
- if (buf == 0)
- return 0;
-
- RGNDATA *rd = reinterpret_cast<RGNDATA*>(buf);
- if (GetRegionData(d->rgn, numBytes, rd) == 0) {
- delete[] buf;
- return 0;
- }
-
- const int n = rd->rdh.nCount;
- delete[] buf;
- return n;
+ return region;
}
-bool QRegion::operator==(const QRegion &r) const
+void qt_win_dispose_rgn(HRGN r)
{
- if (d == r.d)
- return true;
- if ((d->rgn == 0) ^ (r.d->rgn == 0)) // one is empty, not both
- return false;
- return d->rgn == 0 ? true // both empty
- : EqualRgn(d->rgn, r.d->rgn); // both non-empty
+ if (r)
+ DeleteObject(r);
}
-QRegion& QRegion::operator+=(const QRegion &r)
+static void qt_add_rect(HRGN &winRegion, QRect r)
{
- if (!r.d->rgn)
- return *this;
-
- if (!d->rgn) {
- *this = r;
- return *this;
+ HRGN rgn = CreateRectRgn(r.left(), r.top(), r.x() + r.width(), r.y() + r.height());
+ if (rgn) {
+ HRGN dest = CreateRectRgn(0,0,0,0);
+ int result = CombineRgn(dest, winRegion, rgn, RGN_OR);
+ if (result) {
+ DeleteObject(winRegion);
+ winRegion = dest;
+ }
+ DeleteObject(rgn);
}
-
- detach();
-
- int result;
- result = CombineRgn(d->rgn, d->rgn, r.d->rgn, RGN_OR);
- if (result == NULLREGION || result == ERROR)
- *this = QRegion();
-
- return *this;
-}
-
-QRegion& QRegion::operator-=(const QRegion &r)
-{
- if (!r.d->rgn || !d->rgn)
- return *this;
-
- detach();
-
- int result;
- result = CombineRgn(d->rgn, d->rgn, r.d->rgn, RGN_DIFF);
- if (result == NULLREGION || result == ERROR)
- *this = QRegion();
-
- return *this;
}
-QRegion& QRegion::operator&=(const QRegion &r)
+void QRegion::ensureHandle() const
{
- if (!d->rgn)
- return *this;
-
- if (!r.d->rgn) {
- *this = QRegion();
- return *this;
+ if (d->rgn)
+ DeleteObject(d->rgn);
+ d->rgn = CreateRectRgn(0,0,0,0);
+ if (d->qt_rgn) {
+ if (d->qt_rgn->numRects == 1) {
+ QRect r = d->qt_rgn->extents;
+ qt_add_rect(d->rgn, r);
+ return;
+ }
+ for (int i = 0;i < d->qt_rgn->numRects;i++) {
+ QRect r = d->qt_rgn->rects.at(i);
+ qt_add_rect(d->rgn, r);
+ }
}
-
- detach();
-
- int result;
- result = CombineRgn(d->rgn, d->rgn, r.d->rgn, RGN_AND);
- if (result == NULLREGION || result == ERROR)
- *this = QRegion();
-
- return *this;
-}
-
-bool qt_region_strictContains(const QRegion &region, const QRect &rect)
-{
- Q_UNUSED(region);
- Q_UNUSED(rect);
- return false;
}
-void QRegion::ensureHandle() const
-{
-}
QT_END_NAMESPACE