Driver-based rewrite of the Fl_Copy_Surface class.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11374 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Copy_Surface.H

@@ -48,8 +48,7 @@
 */
 class FL_EXPORT Fl_Copy_Surface : public Fl_Widget_Surface {
 private:
-  class Helper;
-  Helper *platform_surface;
+  class Fl_Copy_Surface_Driver *platform_surface;
 protected:
   void translate(int x, int y);
   void untranslate();
@@ -66,6 +65,24 @@ public:
   int printable_rect(int *w, int *h);
 };
 
+
+class Fl_Copy_Surface_Driver : public Fl_Widget_Surface {
+  friend class Fl_Copy_Surface;
+protected:
+  int width;
+  int height;
+  Fl_Copy_Surface_Driver(int w, int h) : Fl_Widget_Surface(NULL), width(w), height(h) {}
+  virtual ~Fl_Copy_Surface_Driver() {}
+  virtual void set_current() {}
+  virtual void translate(int x, int y) {}
+  virtual void untranslate() {}
+  int printable_rect(int *w, int *h) {*w = width; *h = height; return 0;}
+  virtual Fl_RGB_Image *image() {return NULL;}
+  virtual void end_current() {}
+  static Fl_Copy_Surface_Driver *newCopySurfaceDriver(int w, int h);
+};
+
+
 #endif // Fl_Copy_Surface_H
 
 //

src/Fl_Copy_Surface.cxx

@@ -16,44 +16,21 @@
 //     http://www.fltk.org/str.php
 //
 
-#include "config_lib.h"
 #include <FL/Fl_Copy_Surface.H>
 
-#ifdef FL_CFG_GFX_QUARTZ
-#include <src/drivers/Quartz/Fl_Quartz_Copy_Surface.H>
+#if defined(FL_PORTING)
+# pragma message "FL_PORTING: implement class Fl_XXX_Copy_Surface_Driver for your platform"
 
-#elif defined(FL_CFG_GFX_GDI)
-#include <src/drivers/GDI/Fl_GDI_Copy_Surface.H>
-
-#elif defined(USE_SDL)
-#include <src/drivers/PicoSDL/Fl_PicoSDL_Copy_Surface.H>
-
-#elif defined(FL_PORTING) || defined(USE_SDL)
-# pragma message "FL_PORTING: implement class Fl_Copy_Surface::Helper for your platform"
-
-class Fl_Copy_Surface::Helper : public Fl_Widget_Surface { // class model
-  friend class Fl_Copy_Surface;
-private:
-  int width;
-  int height;
-  Helper(int w, int h) : Fl_Widget_Surface(NULL), width(w), height(h) {} // to implement
-  ~Helper() {} // to implement
-  void set_current(){} // to implement
-  void translate(int x, int y) {} // to implement
-  void untranslate() {} // to implement
-  int w() {return width;}
-  int h() {return height;}
-  int printable_rect(int *w, int *h) {*w = width; *h = height; return 0;}
-};
-
-#elif defined(FL_CFG_GFX_XLIB)
-#include <src/drivers/Xlib/Fl_Xlib_Copy_Surface.H>
+Fl_Copy_Surface_Driver *Fl_Copy_Surface_Driver::newCopySurfaceDriver(int w, int h)
+{
+  return NULL;
+}
 
 #endif
 
 /** the constructor */
 Fl_Copy_Surface::Fl_Copy_Surface(int w, int h) : Fl_Widget_Surface(NULL) {
-  platform_surface = new Helper(w, h);
+  platform_surface = Fl_Copy_Surface_Driver::newCopySurfaceDriver(w, h);
   driver(platform_surface->driver());
 }
 
@@ -69,9 +46,9 @@ void Fl_Copy_Surface::translate(int x, int y) {platform_surface->translate(x, y)
 
 void Fl_Copy_Surface::untranslate() {platform_surface->untranslate();}
 
-int Fl_Copy_Surface::w() {return platform_surface->w();}
+int Fl_Copy_Surface::w() {return platform_surface->width;}
 
-int Fl_Copy_Surface::h() {return platform_surface->h();}
+int Fl_Copy_Surface::h() {return platform_surface->height;}
 
 int Fl_Copy_Surface::printable_rect(int *w, int *h)  {return platform_surface->printable_rect(w, h);}
 

src/drivers/GDI/Fl_GDI_Copy_Surface.cxx

@@ -18,11 +18,34 @@
 
 #include "../../config_lib.h"
 
-
 #ifdef FL_CFG_GFX_GDI
-#include "Fl_GDI_Copy_Surface.H"
+#include <FL/Fl_Copy_Surface.H>
+#include "Fl_GDI_Graphics_Driver.H"
+#include <windows.h>
 
-Fl_Copy_Surface::Helper::Helper(int w, int h) : Fl_Widget_Surface(NULL), width(w), height(h) {
+class Fl_GDI_Copy_Surface_Driver : public Fl_Copy_Surface_Driver {
+  friend class Fl_Copy_Surface_Driver;
+protected:
+  HDC oldgc;
+  HDC gc;
+  Fl_GDI_Copy_Surface_Driver(int w, int h);
+  ~Fl_GDI_Copy_Surface_Driver();
+  void set_current();
+  void translate(int x, int y);
+  void untranslate();
+  int w() {return width;}
+  int h() {return height;}
+  int printable_rect(int *w, int *h) {*w = width; *h = height; return 0;}
+};
+
+
+Fl_Copy_Surface_Driver *Fl_Copy_Surface_Driver::newCopySurfaceDriver(int w, int h)
+{
+  return new Fl_GDI_Copy_Surface_Driver(w, h);
+}
+
+
+Fl_GDI_Copy_Surface_Driver::Fl_GDI_Copy_Surface_Driver(int w, int h) : Fl_Copy_Surface_Driver(w, h) {
   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)
@@ -43,7 +66,8 @@ Fl_Copy_Surface::Helper::Helper(int w, int h) : Fl_Widget_Surface(NULL), width(w
   }
 }
 
-Fl_Copy_Surface::Helper::~Helper() {
+
+Fl_GDI_Copy_Surface_Driver::~Fl_GDI_Copy_Surface_Driver() {
   if (oldgc == (HDC)Fl_Surface_Device::surface()->driver()->gc()) oldgc = NULL;
   HENHMETAFILE hmf = CloseEnhMetaFile (gc);
   if ( hmf != NULL ) {
@@ -58,17 +82,20 @@ Fl_Copy_Surface::Helper::~Helper() {
   Fl_Surface_Device::surface()->driver()->gc(oldgc);
 }
 
-void Fl_Copy_Surface::Helper::set_current() {
+
+void Fl_GDI_Copy_Surface_Driver::set_current() {
   driver()->gc(gc);
   fl_window = (Window)1;
   Fl_Surface_Device::set_current();
 }
 
-void Fl_Copy_Surface::Helper::translate(int x, int y) {
+
+void Fl_GDI_Copy_Surface_Driver::translate(int x, int y) {
   ((Fl_Translated_GDI_Graphics_Driver*)driver())->translate_all(x, y);
 }
 
-void Fl_Copy_Surface::Helper::untranslate() {
+
+void Fl_GDI_Copy_Surface_Driver::untranslate() {
   ((Fl_Translated_GDI_Graphics_Driver*)driver())->untranslate_all();
 }
 #endif // FL_CFG_GFX_GDI

src/drivers/Quartz/Fl_Quartz_Copy_Surface.cxx

@@ -19,32 +19,55 @@
 #include "../../config_lib.h"
 
 #ifdef FL_CFG_GFX_QUARTZ
-#include "Fl_Quartz_Copy_Surface.H"
+#include <FL/Fl_Copy_Surface.H>
 #include "Fl_Quartz_Graphics_Driver.H"
 
-Fl_Copy_Surface::Helper::Helper(int w, int h) : Fl_Widget_Surface(NULL), width(w), height(h) {
+class Fl_Quartz_Copy_Surface_Driver : public Fl_Copy_Surface_Driver {
+  friend class Fl_Copy_Surface_Driver;
+protected:
+  CFMutableDataRef pdfdata;
+  CGContextRef gc;
+  void prepare_copy_pdf_and_tiff(int w, int h);
+  void init_PDF_context(int w, int h);
+  static size_t MyPutBytes(void* info, const void* buffer, size_t count);
+  Fl_Quartz_Copy_Surface_Driver(int w, int h);
+  ~Fl_Quartz_Copy_Surface_Driver();
+  void set_current();
+  void translate(int x, int y);
+  void untranslate();
+  int w() {return width;}
+  int h() {return height;}
+  int printable_rect(int *w, int *h) {*w = width; *h = height; return 0;}
+};
+
+Fl_Copy_Surface_Driver *Fl_Copy_Surface_Driver::newCopySurfaceDriver(int w, int h)
+{
+  return new Fl_Quartz_Copy_Surface_Driver(w, h);
+}
+
+Fl_Quartz_Copy_Surface_Driver::Fl_Quartz_Copy_Surface_Driver(int w, int h) : Fl_Copy_Surface_Driver(w, h) {
   driver(new Fl_Quartz_Graphics_Driver);
   prepare_copy_pdf_and_tiff(w, h);
 }
 
-Fl_Copy_Surface::Helper::~Helper() {
+Fl_Quartz_Copy_Surface_Driver::~Fl_Quartz_Copy_Surface_Driver() {
   // that code is implemented in Fl_cocoa.mm because it uses some Objective-c
   Fl_X::complete_copy_pdf_and_tiff(gc, pdfdata);
 }
 
-void Fl_Copy_Surface::Helper::set_current() {
+void Fl_Quartz_Copy_Surface_Driver::set_current() {
   driver()->gc(gc);
   fl_window = (Window)1;
   Fl_Surface_Device::set_current();
 }
 
-size_t Fl_Copy_Surface::Helper::MyPutBytes(void* info, const void* buffer, size_t count)
+size_t Fl_Quartz_Copy_Surface_Driver::MyPutBytes(void* info, const void* buffer, size_t count)
 {
   CFDataAppendBytes ((CFMutableDataRef) info, (const UInt8 *)buffer, count);
   return count;
 }
 
-void Fl_Copy_Surface::Helper::init_PDF_context(int w, int h)
+void Fl_Quartz_Copy_Surface_Driver::init_PDF_context(int w, int h)
 {
   CGRect bounds = CGRectMake(0, 0, w, h );
   pdfdata = CFDataCreateMutable(NULL, 0);
@@ -56,14 +79,14 @@ void Fl_Copy_Surface::Helper::init_PDF_context(int w, int h)
   else
 #endif
   {
-    static CGDataConsumerCallbacks callbacks = { Fl_Copy_Surface::Helper::MyPutBytes, NULL };
+    static CGDataConsumerCallbacks callbacks = { Fl_Quartz_Copy_Surface_Driver::MyPutBytes, NULL };
     myconsumer = CGDataConsumerCreate ((void*) pdfdata, &callbacks);
   }
   gc = CGPDFContextCreate (myconsumer, &bounds, NULL);
   CGDataConsumerRelease (myconsumer);
 }
 
-void Fl_Copy_Surface::Helper::prepare_copy_pdf_and_tiff(int w, int h)
+void Fl_Quartz_Copy_Surface_Driver::prepare_copy_pdf_and_tiff(int w, int h)
 {
   init_PDF_context(w, h);
   if (gc == NULL) return;
@@ -74,14 +97,14 @@ void Fl_Copy_Surface::Helper::prepare_copy_pdf_and_tiff(int w, int h)
   CGContextSaveGState(gc);
 }
 
-void Fl_Copy_Surface::Helper::translate(int x, int y) {
+void Fl_Quartz_Copy_Surface_Driver::translate(int x, int y) {
   CGContextRestoreGState(gc);
   CGContextSaveGState(gc);
   CGContextTranslateCTM(gc, x, y);
   CGContextSaveGState(gc);
 }
 
-void Fl_Copy_Surface::Helper::untranslate() {
+void Fl_Quartz_Copy_Surface_Driver::untranslate() {
   CGContextRestoreGState(gc);
 }
 

src/drivers/Xlib/Fl_Xlib_Copy_Surface.cxx

@@ -19,24 +19,51 @@
 #include "../../config_lib.h"
 
 #ifdef FL_CFG_GFX_XLIB
-#include "Fl_Xlib_Copy_Surface.H"
+#include <FL/Fl_Copy_Surface.H>
 #include <FL/Fl.H>
 #include <FL/fl_draw.H>
+#include "Fl_Translated_Xlib_Graphics_Driver.H"
 
-Fl_Copy_Surface::Helper::Helper(int w, int h) : Fl_Widget_Surface(NULL), width(w), height(h) {
+class Fl_Xlib_Copy_Surface_Driver : public Fl_Copy_Surface_Driver {
+  friend class Fl_Copy_Surface_Driver;
+protected:
+  Fl_Offscreen xid;
+  Window oldwindow;
+  Fl_Surface_Device *_ss;
+  Fl_Xlib_Copy_Surface_Driver(int w, int h);
+  ~Fl_Xlib_Copy_Surface_Driver();
+  void set_current();
+  void translate(int x, int y);
+  void untranslate();
+  int w() {return width;}
+  int h() {return height;}
+  int printable_rect(int *w, int *h) {*w = width; *h = height; return 0;}
+};
+
+
+Fl_Copy_Surface_Driver *Fl_Copy_Surface_Driver::newCopySurfaceDriver(int w, int h)
+{
+  return new Fl_Xlib_Copy_Surface_Driver(w, h);
+}
+
+
+Fl_Xlib_Copy_Surface_Driver::Fl_Xlib_Copy_Surface_Driver(int w, int h) : Fl_Copy_Surface_Driver(w, h) {
   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);
+  Fl_Surface_Device::set_current();
+  fl_window = xid;
+  driver()->color(FL_WHITE);
+  driver()->rectf(0, 0, w, h);
   present_surface->set_current();
+  fl_window = oldwindow;
 }
 
-Fl_Copy_Surface::Helper::~Helper() {
+
+Fl_Xlib_Copy_Surface_Driver::~Fl_Xlib_Copy_Surface_Driver() {
   fl_pop_clip();
   unsigned char *data = fl_read_image(NULL,0,0,width,height,0);
   fl_window = oldwindow;
@@ -46,18 +73,21 @@ Fl_Copy_Surface::Helper::~Helper() {
   fl_delete_offscreen(xid);
 }
 
-void Fl_Copy_Surface::Helper::set_current() {
-  fl_window=xid;
+
+void Fl_Xlib_Copy_Surface_Driver::set_current() {
+  fl_window = xid;
   if (!_ss) _ss = Fl_Surface_Device::surface();
   Fl_Surface_Device::set_current();
   fl_push_no_clip();
 }
 
-void Fl_Copy_Surface::Helper::translate(int x, int y) {
+
+void Fl_Xlib_Copy_Surface_Driver::translate(int x, int y) {
   ((Fl_Translated_Xlib_Graphics_Driver*)driver())->translate_all(x, y);
 }
 
-void Fl_Copy_Surface::Helper::untranslate() {
+
+void Fl_Xlib_Copy_Surface_Driver::untranslate() {
   ((Fl_Translated_Xlib_Graphics_Driver*)driver())->untranslate_all();
 }