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authorscuri <scuri>2008-10-17 06:10:33 +0000
committerscuri <scuri>2008-10-17 06:10:33 +0000
commit7b52cc13af4e85f1ca2deb6b6c77de9c95ea0dcf (patch)
treed0857278bde2eff784227c57dcaf930346ceb7ac /src/gdiplus/cdwdbufp.cpp
First commit - moving from LuaForge to SourceForge
Diffstat (limited to 'src/gdiplus/cdwdbufp.cpp')
-rw-r--r--src/gdiplus/cdwdbufp.cpp152
1 files changed, 152 insertions, 0 deletions
diff --git a/src/gdiplus/cdwdbufp.cpp b/src/gdiplus/cdwdbufp.cpp
new file mode 100644
index 0000000..6d968b2
--- /dev/null
+++ b/src/gdiplus/cdwdbufp.cpp
@@ -0,0 +1,152 @@
+/** \file
+ * \brief Windows GDI+ Double Buffer
+ *
+ * See Copyright Notice in cd.h
+ */
+
+#include "cdwinp.h"
+#include "cddbuf.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+
+static void cdkillcanvas(cdCtxCanvas* ctxcanvas)
+{
+ cdwpKillCanvas(ctxcanvas);
+
+ if (ctxcanvas->bitmap_dbuffer) delete ctxcanvas->bitmap_dbuffer;
+ delete ctxcanvas->bitmap;
+
+ delete ctxcanvas;
+}
+
+static void cddeactivate(cdCtxCanvas* ctxcanvas)
+{
+ cdCanvas* canvas_dbuffer = ctxcanvas->canvas_dbuffer;
+ /* this is done in the canvas_dbuffer context */
+ cdCanvasDeactivate(canvas_dbuffer);
+}
+
+static void cdflush(cdCtxCanvas* ctxcanvas)
+{
+ cdCanvas* canvas_dbuffer = ctxcanvas->canvas_dbuffer;
+
+ if (ctxcanvas->dirty || ctxcanvas->bitmap_dbuffer == NULL)
+ {
+ ctxcanvas->dirty = 0;
+ if (ctxcanvas->bitmap_dbuffer) delete ctxcanvas->bitmap_dbuffer;
+ ctxcanvas->bitmap_dbuffer = new CachedBitmap(ctxcanvas->bitmap, canvas_dbuffer->ctxcanvas->graphics);
+ }
+
+ ctxcanvas->graphics->Flush(FlushIntentionSync);
+
+ /* this is done in the canvas_dbuffer context */
+ /* Flush can be affected by Origin and Clipping, but not WriteMode */
+ canvas_dbuffer->ctxcanvas->graphics->ResetTransform();
+
+ int x = 0, y = 0;
+ if (canvas_dbuffer->use_origin)
+ {
+ x += canvas_dbuffer->origin.x;
+ if (canvas_dbuffer->invert_yaxis)
+ y -= canvas_dbuffer->origin.y; // top down shift
+ else
+ y += canvas_dbuffer->origin.y;
+ }
+
+ int old_writemode = cdCanvasWriteMode(canvas_dbuffer, CD_REPLACE);
+ canvas_dbuffer->ctxcanvas->graphics->DrawCachedBitmap(ctxcanvas->bitmap_dbuffer, x, y);
+ canvas_dbuffer->ctxcanvas->graphics->Flush(FlushIntentionSync);
+ cdCanvasWriteMode(canvas_dbuffer, old_writemode);
+}
+
+static int cdactivate(cdCtxCanvas* ctxcanvas)
+{
+ cdCanvas* canvas_dbuffer = ctxcanvas->canvas_dbuffer;
+
+ /* this is done in the canvas_dbuffer context */
+ /* this will update canvas size */
+ cdCanvasActivate(canvas_dbuffer);
+
+ /* check if the size changed */
+ if (canvas_dbuffer->w != ctxcanvas->canvas->w ||
+ canvas_dbuffer->h != ctxcanvas->canvas->h)
+ {
+ delete ctxcanvas->graphics;
+ delete ctxcanvas->bitmap;
+ if (ctxcanvas->bitmap_dbuffer) delete ctxcanvas->bitmap_dbuffer;
+ ctxcanvas->bitmap_dbuffer = NULL;
+
+ Bitmap* bitmap = new Bitmap(canvas_dbuffer->w, canvas_dbuffer->h, PixelFormat24bppRGB);
+ bitmap->SetResolution((REAL)(canvas_dbuffer->xres*25.4), (REAL)(canvas_dbuffer->yres*25.4));
+
+ ctxcanvas->bitmap = bitmap;
+ ctxcanvas->graphics = new Graphics(bitmap);
+
+ ctxcanvas->canvas->w = canvas_dbuffer->w;
+ ctxcanvas->canvas->h = canvas_dbuffer->h;
+
+ ctxcanvas->dirty = 1;
+
+ cdwpUpdateCanvas(ctxcanvas);
+ }
+
+ return CD_OK;
+}
+
+/*
+%F cdCreateCanvas para DBuffer.
+O DC é um BITMAP em memoria.
+*/
+static void cdcreatecanvas(cdCanvas* canvas, void *data)
+{
+ cdCanvas* canvas_dbuffer = (cdCanvas*)data;
+ if (!canvas_dbuffer)
+ return;
+
+ Bitmap* bitmap = new Bitmap(canvas_dbuffer->w, canvas_dbuffer->h, PixelFormat24bppRGB);
+ bitmap->SetResolution((REAL)(canvas_dbuffer->xres*25.4), (REAL)(canvas_dbuffer->yres*25.4));
+
+ Graphics imggraphics(bitmap);
+ imggraphics.Clear(Color::White);
+
+ Graphics* graphics = new Graphics(bitmap);
+
+ canvas->w = canvas_dbuffer->w;
+ canvas->h = canvas_dbuffer->h;
+ canvas->bpp = 24;
+
+ /* Initialize base driver */
+ cdCtxCanvas* ctxcanvas = cdwpCreateCanvas(canvas, graphics, CDW_BMP);
+
+ ctxcanvas->bitmap = bitmap;
+ ctxcanvas->canvas_dbuffer = canvas_dbuffer;
+}
+
+static void cdinittable(cdCanvas* canvas)
+{
+ cdwpInitTable(canvas);
+
+ canvas->cxActivate = cdactivate;
+ canvas->cxDeactivate = cddeactivate;
+ canvas->cxFlush = cdflush;
+ canvas->cxKillCanvas = cdkillcanvas;
+}
+
+static cdContext cdDBufferContext =
+{
+ CD_CAP_ALL & ~(CD_CAP_PLAY | CD_CAP_YAXIS |
+ CD_CAP_FPRIMTIVES),
+ 1,
+ cdcreatecanvas,
+ cdinittable,
+ NULL,
+ NULL,
+};
+
+extern "C" {
+cdContext* cdContextDBufferPlus(void)
+{
+ return &cdDBufferContext;
+}
+}