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//
// "$Id: Fl_GDI_Image_Surface.cxx 11278 2016-03-03 19:16:22Z manolo $"
//
// Draw-to-image code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2016 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include "../../config_lib.h"
#ifdef FL_CFG_GFX_GDI
#include "Fl_GDI_Graphics_Driver.H"
#include <FL/Fl_Image_Surface.H>
#include <FL/fl_draw.H>
#include <windows.h>
class Fl_GDI_Image_Surface_Driver : public Fl_Image_Surface_Driver {
friend class Fl_Image_Surface;
public:
Fl_Surface_Device *previous;
Window pre_window;
HDC _sgc;
int _savedc;
Fl_GDI_Image_Surface_Driver(int w, int h, int high_res);
~Fl_GDI_Image_Surface_Driver();
void set_current();
void translate(int x, int y);
void untranslate();
Fl_RGB_Image *image();
void end_current();
};
Fl_Image_Surface_Driver *Fl_Image_Surface_Driver::newImageSurfaceDriver(int w, int h, int high_res, Fl_Offscreen off)
{
return new Fl_GDI_Image_Surface_Driver(w, h, high_res);
}
Fl_GDI_Image_Surface_Driver::Fl_GDI_Image_Surface_Driver(int w, int h, int high_res) : Fl_Image_Surface_Driver(w, h, high_res, 0) {
previous = 0;
offscreen = CreateCompatibleBitmap( (fl_graphics_driver->gc() ? (HDC)fl_graphics_driver->gc() : fl_GetDC(0) ) , w, h);
driver(new Fl_Translated_GDI_Graphics_Driver);
_sgc = NULL;
}
Fl_GDI_Image_Surface_Driver::~Fl_GDI_Image_Surface_Driver() {
if (offscreen) DeleteObject(offscreen);
}
void Fl_GDI_Image_Surface_Driver::set_current() {
pre_window = fl_window;
if (!previous) previous = Fl_Surface_Device::surface();
if (!_sgc) _sgc = (HDC)previous->driver()->gc();
HDC gc = fl_makeDC(offscreen);
Fl_Surface_Device::set_current();
driver()->gc(gc);
_savedc = SaveDC(gc);
fl_window=(HWND)offscreen;
fl_push_no_clip();
}
void Fl_GDI_Image_Surface_Driver::translate(int x, int y) {
((Fl_Translated_GDI_Graphics_Driver*)driver())->translate_all(x, y);
}
void Fl_GDI_Image_Surface_Driver::untranslate() {
((Fl_Translated_GDI_Graphics_Driver*)driver())->untranslate_all();
}
Fl_RGB_Image* Fl_GDI_Image_Surface_Driver::image()
{
unsigned char *data;
data = fl_read_image(NULL, 0, 0, width, height, 0);
end_current();
previous->driver()->gc(_sgc);
Fl_RGB_Image *image = new Fl_RGB_Image(data, width, height);
image->alloc_array = 1;
return image;
}
void Fl_GDI_Image_Surface_Driver::end_current()
{
HDC gc = (HDC)driver()->gc();
RestoreDC(gc, _savedc);
DeleteDC(gc);
fl_pop_clip();
previous->Fl_Surface_Device::set_current();
fl_window = pre_window;
}
#endif // FL_CFG_GFX_GDI
//
// End of "$Id: Fl_GDI_Image_Surface.cxx 11220 2016-02-26 12:51:47Z manolo $".
//
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