Initial revision

FossilOrigin-Name: 2bf55ca9aa942b581137b9f474da5ad9c1480de4

1 files changed, 184 insertions, 0 deletions

diff --git a/win/tkWinPixmap.c b/win/tkWinPixmap.c
new file mode 100644
index 0000000..1ca2d7e
--- /dev/null
+++ b/win/tkWinPixmap.c
@@ -0,0 +1,184 @@
+/* 
+ * tkWinPixmap.c --
+ *
+ *	This file contains the Xlib emulation functions pertaining to
+ *	creating and destroying pixmaps.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tkWinPixmap.c 1.18 97/08/06 15:36:23
+ */
+
+#include "tkWinInt.h"
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_GetPixmap --
+ *
+ *	Creates an in memory drawing surface.
+ *
+ * Results:
+ *	Returns a handle to a new pixmap.
+ *
+ * Side effects:
+ *	Allocates a new Win32 bitmap.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Pixmap
+Tk_GetPixmap(display, d, width, height, depth)
+    Display* display;
+    Drawable d;
+    int width;
+    int height;
+    int depth;
+{
+    TkWinDrawable *newTwdPtr, *twdPtr;
+    int planes;
+    Screen *screen;
+    
+    display->request++;
+
+    newTwdPtr = (TkWinDrawable*) ckalloc(sizeof(TkWinDrawable));
+    newTwdPtr->type = TWD_BITMAP;
+    newTwdPtr->bitmap.depth = depth;
+    twdPtr = (TkWinDrawable *)d;
+    if (twdPtr->type != TWD_BITMAP) {
+	if (twdPtr->window.winPtr == NULL) {
+	    newTwdPtr->bitmap.colormap = DefaultColormap(display,
+		    DefaultScreen(display));
+	} else {
+	    newTwdPtr->bitmap.colormap = twdPtr->window.winPtr->atts.colormap;
+	}
+    } else {
+	newTwdPtr->bitmap.colormap = twdPtr->bitmap.colormap;
+    }
+    screen = &display->screens[0];
+    planes = 1;
+    if (depth == screen->root_depth) {
+	planes = (int) screen->ext_data;
+	depth /= planes;
+    }
+    newTwdPtr->bitmap.handle = CreateBitmap(width, height, planes, depth, NULL);
+
+    if (newTwdPtr->bitmap.handle == NULL) {
+	ckfree((char *) newTwdPtr);
+	return None;
+    }
+    
+    return (Pixmap)newTwdPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_FreePixmap --
+ *
+ *	Release the resources associated with a pixmap.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Deletes the bitmap created by Tk_GetPixmap.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tk_FreePixmap(display, pixmap)
+    Display* display;
+    Pixmap pixmap;
+{
+    TkWinDrawable *twdPtr = (TkWinDrawable *) pixmap;
+
+    display->request++;
+    if (twdPtr != NULL) {
+	DeleteObject(twdPtr->bitmap.handle);
+	ckfree((char *)twdPtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkSetPixmapColormap --
+ *
+ *	The following function is a hack used by the photo widget to
+ *	explicitly set the colormap slot of a Pixmap.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkSetPixmapColormap(pixmap, colormap)
+    Pixmap pixmap;
+    Colormap colormap;
+{
+    TkWinDrawable *twdPtr = (TkWinDrawable *)pixmap;
+    twdPtr->bitmap.colormap = colormap;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XGetGeometry --
+ *
+ *	Retrieve the geometry of the given drawable.  Note that
+ *	this is a degenerate implementation that only returns the
+ *	size of a pixmap.
+ *
+ * Results:
+ *	Returns 0.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XGetGeometry(display, d, root_return, x_return, y_return, width_return,
+	height_return, border_width_return, depth_return)
+    Display* display;
+    Drawable d;
+    Window* root_return;
+    int* x_return;
+    int* y_return;
+    unsigned int* width_return;
+    unsigned int* height_return;
+    unsigned int* border_width_return;
+    unsigned int* depth_return;
+{
+    TkWinDrawable *twdPtr = (TkWinDrawable *)d;
+    HDC dc;
+    BITMAPINFO info;
+
+    if ((twdPtr->type != TWD_BITMAP) || (twdPtr->bitmap.handle == NULL)) {
+	panic("XGetGeometry: invalid pixmap");
+    }
+    dc = GetDC(NULL);
+    info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    info.bmiHeader.biBitCount = 0;
+    if (!GetDIBits(dc, twdPtr->bitmap.handle, 0, 0, NULL, &info,
+	    DIB_RGB_COLORS)) {
+	panic("XGetGeometry: unable to get bitmap size");
+    }
+    ReleaseDC(NULL, dc);
+
+    *width_return = info.bmiHeader.biWidth;
+    *height_return = info.bmiHeader.biHeight;
+    return 1;
+}