1 files changed, 209 insertions, 0 deletions
diff --git a/src/win32/cdwnative.c b/src/win32/cdwnative.c
new file mode 100644
index 0000000..fdc223e
--- /dev/null
+++ b/src/win32/cdwnative.c
@@ -0,0 +1,209 @@
+/** \file
+ * \brief Windows Native Window Driver
+ *
+ * See Copyright Notice in cd.h
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "cdwin.h"
+#include "cdnative.h"
+
+
+int cdGetScreenColorPlanes(void)
+{
+  int bpp;
+  HDC ScreenDC = GetDC(NULL);
+  bpp = GetDeviceCaps(ScreenDC, BITSPIXEL);
+  ReleaseDC(NULL, ScreenDC);
+  return bpp;
+}
+
+void cdGetScreenSize(int *width, int *height, double *width_mm, double *height_mm)
+{
+  HDC ScreenDC = GetDC(NULL);
+  if (width) *width = GetDeviceCaps(ScreenDC, HORZRES);
+  if (height) *height = GetDeviceCaps(ScreenDC, VERTRES);
+  if (width_mm) *width_mm = ((GetDeviceCaps(ScreenDC, HORZRES) * 25.4) / GetDeviceCaps(ScreenDC, LOGPIXELSX));
+  if (height_mm) *height_mm = ((GetDeviceCaps(ScreenDC, VERTRES) * 25.4) / GetDeviceCaps(ScreenDC, LOGPIXELSY));
+  ReleaseDC(NULL, ScreenDC);
+}
+
+static void cdwReleaseDC(cdCtxCanvas *ctxcanvas)
+{
+  SelectObject(ctxcanvas->hDC, ctxcanvas->hOldBrush);     
+  SelectObject(ctxcanvas->hDC, ctxcanvas->hOldPen);
+  SelectObject(ctxcanvas->hDC, ctxcanvas->hOldFont);
+  ReleaseDC(ctxcanvas->hWnd, ctxcanvas->hDC);
+  ctxcanvas->hDC = NULL;
+}
+
+static int cdactivate(cdCtxCanvas *ctxcanvas)
+{
+  if (ctxcanvas->hWnd)
+  {
+    RECT rect;
+    HDC ScreenDC;
+    GetClientRect(ctxcanvas->hWnd, &rect);
+    ctxcanvas->canvas->w = rect.right - rect.left;
+    ctxcanvas->canvas->h = rect.bottom - rect.top;
+  
+    ctxcanvas->canvas->w_mm = ((double)ctxcanvas->canvas->w) / ctxcanvas->canvas->xres;
+    ctxcanvas->canvas->h_mm = ((double)ctxcanvas->canvas->h) / ctxcanvas->canvas->yres;
+  
+    ScreenDC = GetDC(NULL);
+    ctxcanvas->canvas->bpp = GetDeviceCaps(ScreenDC, BITSPIXEL);
+    ReleaseDC(NULL, ScreenDC);
+
+    if (ctxcanvas->canvas->use_matrix)
+      ctxcanvas->canvas->cxTransform(ctxcanvas, ctxcanvas->canvas->matrix);
+  }
+  
+  /* Se nao e' ownwer, tem que restaurar o contexto */
+  if (!ctxcanvas->isOwnedDC)
+  {
+    if (ctxcanvas->hDC) /* deactivate not called */
+      cdwReleaseDC(ctxcanvas);
+
+    ctxcanvas->hDC = GetDC(ctxcanvas->hWnd);
+    cdwRestoreDC(ctxcanvas);
+  }
+
+  return CD_OK;
+}
+
+static void cddeactivate(cdCtxCanvas *ctxcanvas)
+{
+  /* Se nao e' ownwer, tem que liberar o contexto */
+  if (!ctxcanvas->isOwnedDC && ctxcanvas->hDC)
+    cdwReleaseDC(ctxcanvas);
+}
+
+static void cdkillcanvas(cdCtxCanvas *ctxcanvas)
+{
+  /* se nao e' owner e nao esta' ativo, simula ativacao */
+  if (!ctxcanvas->isOwnedDC && !ctxcanvas->hDC)
+  {
+    ctxcanvas->hDC = GetDC(ctxcanvas->hWnd);
+    cdwRestoreDC(ctxcanvas);
+  }
+  
+  cdwKillCanvas(ctxcanvas);
+
+  if (ctxcanvas->release_dc)
+    ReleaseDC(ctxcanvas->hWnd, ctxcanvas->hDC);
+  
+  memset(ctxcanvas, 0, sizeof(cdCtxCanvas));
+  free(ctxcanvas);
+}
+
+static void cdcreatecanvas(cdCanvas* canvas, void *data)
+{
+  cdCtxCanvas* ctxcanvas;
+  HWND hWnd = NULL;
+  HDC hDC, ScreenDC;
+  int release_dc = 0;
+
+  ScreenDC = GetDC(NULL);
+  canvas->bpp = GetDeviceCaps(ScreenDC, BITSPIXEL);
+  canvas->xres = (float)(((double)GetDeviceCaps(ScreenDC, LOGPIXELSX)) / 25.4);
+  canvas->yres = (float)(((double)GetDeviceCaps(ScreenDC, LOGPIXELSY)) / 25.4);
+  ReleaseDC(NULL, ScreenDC);
+
+  if (!data)
+  {
+    hDC = GetDC(NULL);
+    release_dc = 1;
+    canvas->w = GetDeviceCaps(hDC, HORZRES);
+    canvas->h = GetDeviceCaps(hDC, VERTRES);
+  }
+  else if (IsWindow((HWND)data)) 
+  {
+    RECT rect;
+    hWnd = (HWND)data;
+
+    hDC = GetDC(hWnd);
+    release_dc = 1;
+  
+    GetClientRect(hWnd, &rect);
+    canvas->w = rect.right - rect.left;
+    canvas->h = rect.bottom - rect.top;
+  }
+  else  /* can be a HDC or a string */
+  {
+    DWORD objtype = GetObjectType((HGDIOBJ)data);
+    if (objtype == OBJ_DC || objtype == OBJ_MEMDC || 
+        objtype == OBJ_ENHMETADC || objtype == OBJ_METADC)   
+    {
+      hDC = (HDC)data;
+      canvas->w = GetDeviceCaps(hDC, HORZRES);
+      canvas->h = GetDeviceCaps(hDC, VERTRES);
+    }
+    else
+    {
+      hDC = NULL;
+      canvas->w = 0;
+      canvas->h = 0;
+      sscanf((char*)data,"%p %dx%d", &hDC, &canvas->w, &canvas->h); 
+
+      if (!hDC || !canvas->w || !canvas->h)
+        return;
+    }
+    release_dc = 0;
+  }
+  
+  canvas->w_mm = ((double)canvas->w) / canvas->xres;
+  canvas->h_mm = ((double)canvas->h) / canvas->yres;
+
+  /* Inicializa driver WIN32 */
+  ctxcanvas = cdwCreateCanvas(canvas, hWnd, hDC, CDW_WIN);
+  
+  ctxcanvas->release_dc = release_dc;
+  ctxcanvas->clip_pnt[2].x = ctxcanvas->clip_pnt[1].x = canvas->w - 1;
+  ctxcanvas->clip_pnt[3].y = ctxcanvas->clip_pnt[2].y = canvas->h - 1;
+
+  if (hWnd)
+  {
+    LONG style;
+    style = GetClassLong(hWnd, GCL_STYLE);
+    ctxcanvas->isOwnedDC = (int) ((style & CS_OWNDC) || (style & CS_CLASSDC));
+  }
+  else
+    ctxcanvas->isOwnedDC = 1;
+
+  /* Se nao e' ownwer, tem que liberar o contexto */
+  if (!ctxcanvas->isOwnedDC)
+    cdwReleaseDC(ctxcanvas);
+}
+
+static void cdinittable(cdCanvas* canvas)
+{
+  cdwInitTable(canvas);
+
+  canvas->cxKillCanvas = cdkillcanvas;
+  canvas->cxActivate = cdactivate;
+  canvas->cxDeactivate = cddeactivate;
+}
+
+static cdContext cdNativeContext =
+{
+  CD_CAP_ALL & ~(CD_CAP_PLAY | CD_CAP_YAXIS | CD_CAP_FPRIMTIVES ),
+  0,
+  cdcreatecanvas,
+  cdinittable,
+  NULL,              
+  NULL,
+};
+
+cdContext* cdContextNativeWindow(void)
+{
+  if (cdUseContextPlus(CD_QUERY))
+  {
+    cdContext* ctx = cdGetContextPlus(CD_CTX_NATIVEWINDOW);
+    if (ctx != NULL)
+      return ctx;
+  }
+
+  return &cdNativeContext;
+}