Rewrite the Fl_Copy_Surface class with strict separation of public API and platform-related code.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11257 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 31 insertions, 168 deletions

diff --git a/src/Fl_Copy_Surface.cxx b/src/Fl_Copy_Surface.cxx
index 8076325bc..c6c1a3192 100644
--- a/src/Fl_Copy_Surface.cxx
+++ b/src/Fl_Copy_Surface.cxx
@@ -18,194 +18,57 @@
 
 #include "config_lib.h"
 #include <FL/Fl_Copy_Surface.H>
-#include <FL/Fl.H>
-#ifdef FL_CFG_GFX_QUARTZ
-#include "drivers/Quartz/Fl_Quartz_Graphics_Driver.h"
-#endif
-#ifdef FL_CFG_GFX_XLIB
-#include "drivers/Xlib/Fl_Translated_Xlib_Graphics_Driver.H"
-#endif
-#ifdef FL_CFG_GFX_GDI
-#include "drivers/GDI/Fl_GDI_Graphics_Driver.H"
-#endif
 
-
-#if defined(__APPLE__) // PORTME: Fl_Surface_Driver - platform copy surface
+#ifdef __APPLE__
+#include <src/drivers/Quartz/Fl_Quartz_Copy_Surface.H>
 
 #elif defined(WIN32)
+#include <src/drivers/GDI/Fl_GDI_Copy_Surface.H>
 
-
-#else
-
-#endif
-
-
-/** Constructor.
- \param w and \param h are the width and height of the clipboard surface
- in pixels where drawing will occur.
- */
-Fl_Copy_Surface::Fl_Copy_Surface(int w, int h) :  Fl_Widget_Surface(NULL)
-{
-  width = w;
-  height = h;
-#ifdef __APPLE__ // PORTME: Fl_Surface_Driver - platform copy surface
-  driver(new Fl_Quartz_Graphics_Driver);
-  prepare_copy_pdf_and_tiff(w, h);
-#elif defined(WIN32)
-  driver(new Fl_Translated_GDI_Graphics_Driver);
-  oldgc = (HDC)Fl_Surface_Device::surface()->driver()->gc();
-  // exact computation of factor from screen units to EnhMetaFile units (0.01 mm)
-  HDC hdc = GetDC(NULL);
-  int hmm = GetDeviceCaps(hdc, HORZSIZE);
-  int hdots = GetDeviceCaps(hdc, HORZRES);
-  int vmm = GetDeviceCaps(hdc, VERTSIZE);
-  int vdots = GetDeviceCaps(hdc, VERTRES);
-  ReleaseDC(NULL, hdc);
-  float factorw = (100.f * hmm) / hdots;
-  float factorh = (100.f * vmm) / vdots;
-
-  RECT rect; rect.left = 0; rect.top = 0; rect.right = (LONG)(w * factorw); rect.bottom = (LONG)(h * factorh);
-  gc = CreateEnhMetaFile (NULL, NULL, &rect, NULL);
-  if (gc != NULL) {
-    SetTextAlign(gc, TA_BASELINE|TA_LEFT);
-    SetBkMode(gc, TRANSPARENT);
-  }
-#elif defined(FL_PORTING)
-#  pragma message "FL_PORTING: initialize members of Fl_Copy_Surface"
-#else // Xlib
-  driver(new Fl_Translated_Xlib_Graphics_Driver());
-  Fl::first_window()->make_current();
-  oldwindow = fl_xid(Fl::first_window());
-  xid = fl_create_offscreen(w,h);
-  _ss = NULL;
-  Fl_Surface_Device *present_surface = Fl_Surface_Device::surface();
-  set_current();
-  fl_color(FL_WHITE);
-  fl_rectf(0, 0, w, h);
-  present_surface->set_current();
-#endif
-}
-
-/** Destructor.
- */
-Fl_Copy_Surface::~Fl_Copy_Surface()
-{
-#ifdef __APPLE__ // PORTME: Fl_Surface_Driver - platform copy surface
-  complete_copy_pdf_and_tiff();
-#elif defined(WIN32)
-  if (oldgc == (HDC)Fl_Surface_Device::surface()->driver()->gc()) oldgc = NULL;
-  HENHMETAFILE hmf = CloseEnhMetaFile (gc);
-  if ( hmf != NULL ) {
-    if ( OpenClipboard (NULL) ){
-      EmptyClipboard ();
-      SetClipboardData (CF_ENHMETAFILE, hmf);
-      CloseClipboard ();
-    }
-    DeleteEnhMetaFile(hmf);
-  }
-  DeleteDC(gc);
-  Fl_Surface_Device::surface()->driver()->gc(oldgc);
 #elif defined(FL_PORTING)
-#  pragma message "FL_PORTING: free resources in destructor of Fl_Copy_Surface"
-#else // Xlib
-  fl_pop_clip();
-  unsigned char *data = fl_read_image(NULL,0,0,width,height,0);
-  fl_window = oldwindow;
-  _ss->set_current();
-  Fl::copy_image(data,width,height,1);
-  delete[] data;
-  fl_delete_offscreen(xid);
-#endif
-}
-
+# pragma message "FL_PORTING: implement class Fl_Copy_Surface::Helper for your platform"
+
+class Fl_Copy_Surface::Helper : public Fl_Widget_Surface { // model
+  friend class Fl_Copy_Surface;
+private:
+  int width;
+  int height;
+  Helper(int w, int h) : Fl_Widget_Surface(NULL) {}
+  ~Helper() {}
+  void set_current(){}
+  void translate(int x, int y) {}
+  void untranslate() {}
+  int w() {return width;}
+  int h() {return height;}
+};
 
-void Fl_Copy_Surface::set_current()
-{
-#if defined(__APPLE__) || defined(WIN32) // PORTME: Fl_Surface_Driver - platform copy surface
-  driver()->gc(gc);
-  fl_window = (Window)1;
-  Fl_Surface_Device::set_current();
-#elif defined(FL_PORTING)
-#  pragma message "FL_PORTING: implement Fl_Copy_Surface::set_current"
 #else
-  fl_window=xid;
-  if (!_ss) _ss = Fl_Surface_Device::surface();
-  Fl_Surface_Device::set_current();
-  fl_push_no_clip();
-#endif
-}
-
-
-#if defined(__APPLE__) // PORTME: Fl_Surface_Driver - platform copy surface
-
-size_t Fl_Copy_Surface::MyPutBytes(void* info, const void* buffer, size_t count)
-  {
-  CFDataAppendBytes ((CFMutableDataRef) info, (const UInt8 *)buffer, count);
-  return count;
-}
+#include <src/drivers/Xlib/Fl_Xlib_Copy_Surface.H>
 
-void Fl_Copy_Surface::init_PDF_context(int w, int h)
-{
-  CGRect bounds = CGRectMake(0, 0, w, h );
-  pdfdata = CFDataCreateMutable(NULL, 0);
-  CGDataConsumerRef myconsumer;
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1040
-  if (&CGDataConsumerCreateWithCFData != NULL) {
-    myconsumer = CGDataConsumerCreateWithCFData(pdfdata); // 10.4
-  }
-  else
 #endif
-  {
-    static CGDataConsumerCallbacks callbacks = { Fl_Copy_Surface::MyPutBytes, NULL };
-    myconsumer = CGDataConsumerCreate ((void*) pdfdata, &callbacks);
-  }
-  gc = CGPDFContextCreate (myconsumer, &bounds, NULL);
-  CGDataConsumerRelease (myconsumer);
-}
 
-void Fl_Copy_Surface::prepare_copy_pdf_and_tiff(int w, int h)
-{
-  init_PDF_context(w, h);
-  if (gc == NULL) return;
-  CGRect bounds = CGRectMake(0, 0, w, h );
-  CGContextBeginPage (gc, &bounds);
-  CGContextTranslateCTM(gc, 0, h);
-  CGContextScaleCTM(gc, 1.0f, -1.0f);
-  CGContextSaveGState(gc);
+Fl_Copy_Surface::Helper *Fl_Copy_Surface::newPlatformSurface(int w, int h) {
+  return new Helper(w, h);
 }
 
-void Fl_Copy_Surface::translate(int x, int y) {
-  CGContextRef gc = (CGContextRef)driver()->gc();
-  CGContextRestoreGState(gc);
-  CGContextSaveGState(gc);
-  CGContextTranslateCTM(gc, x, y);
-  CGContextSaveGState(gc);
+Fl_Copy_Surface::Fl_Copy_Surface(int w, int h) : Fl_Widget_Surface(NULL) {
+  platform_surface = newPlatformSurface(w, h);
+  driver(platform_surface->driver());
 }
 
-void Fl_Copy_Surface::untranslate() {
-  CGContextRestoreGState((CGContextRef)driver()->gc());
-}
+Fl_Copy_Surface::~Fl_Copy_Surface() { delete platform_surface; }
 
-#elif defined(WIN32)
+void Fl_Copy_Surface::origin(int *x, int *y) {platform_surface->origin(x, y);}
 
-void Fl_Copy_Surface::translate(int x, int y) {
-  ((Fl_Translated_GDI_Graphics_Driver*)driver())->translate_all(x, y);
-}
+void Fl_Copy_Surface::set_current() {platform_surface->set_current();}
 
-void Fl_Copy_Surface::untranslate() {
-  ((Fl_Translated_GDI_Graphics_Driver*)driver())->untranslate_all();
-}
+void Fl_Copy_Surface::translate(int x, int y) {platform_surface->translate(x, y);}
 
-#else
-void Fl_Copy_Surface::translate(int x, int y) {
-  ((Fl_Translated_Xlib_Graphics_Driver*)driver())->translate_all(x, y);
-}
+void Fl_Copy_Surface::untranslate() {platform_surface->untranslate();}
 
-void Fl_Copy_Surface::untranslate() {
-  ((Fl_Translated_Xlib_Graphics_Driver*)driver())->untranslate_all();
-}
+int Fl_Copy_Surface::w() {return platform_surface->w();}
 
-#endif  // __APPLE__ // PORTME: Fl_Surface_Driver - platform copy surface
+int Fl_Copy_Surface::h() {return platform_surface->h();}
 
 //
 // End of "$Id$".