1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
//
// "$Id$"
//
// Draw-to-image code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2017 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 "../WinAPI/Fl_WinAPI_Screen_Driver.H"
#include <FL/Fl_Image_Surface.H>
#include <FL/fl_draw.H>
#include <FL/x.H>
#include <windows.h>
class Fl_GDI_Image_Surface_Driver : public Fl_Image_Surface_Driver {
virtual void end_current_(Fl_Surface_Device*);
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_Offscreen off);
~Fl_GDI_Image_Surface_Driver();
void set_current();
void translate(int x, int y);
void untranslate();
Fl_RGB_Image *image();
};
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, off);
}
Fl_GDI_Image_Surface_Driver::Fl_GDI_Image_Surface_Driver(int w, int h, int high_res, Fl_Offscreen off) : Fl_Image_Surface_Driver(w, h, high_res, 0) {
previous = 0;
float d = fl_graphics_driver->scale();
if (!off && d != 1 && high_res) {
w = int(w*d);
h = int(h*d);
}
HDC gc = (HDC)Fl_Graphics_Driver::default_driver().gc();
offscreen = off ? off : CreateCompatibleBitmap( (gc ? gc : fl_GetDC(0) ) , w, h);
if (!offscreen) offscreen = CreateCompatibleBitmap(fl_GetDC(0), w, h);
driver(new Fl_GDI_Graphics_Driver);
if (d != 1 && high_res) driver()->scale(d);
_sgc = NULL;
}
Fl_GDI_Image_Surface_Driver::~Fl_GDI_Image_Surface_Driver() {
if (offscreen) DeleteObject(offscreen);
delete driver();
}
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_GDI_Graphics_Driver*)driver())->translate_all(x, y);
}
void Fl_GDI_Image_Surface_Driver::untranslate() {
((Fl_GDI_Graphics_Driver*)driver())->untranslate_all();
}
Fl_RGB_Image* Fl_GDI_Image_Surface_Driver::image()
{
Fl_RGB_Image *image = Fl::screen_driver()->read_win_rectangle(NULL, 0, 0, width, height, 0);
previous->driver()->gc(_sgc);
return image;
}
void Fl_GDI_Image_Surface_Driver::end_current_(Fl_Surface_Device*)
{
HDC gc = (HDC)driver()->gc();
RestoreDC(gc, _savedc);
DeleteDC(gc);
fl_pop_clip();
fl_window = pre_window;
}
#endif // FL_CFG_GFX_GDI
//
// End of "$Id$".
//
|
