autoredraw exe version use fl_window and draw direct
before play a video the test app cpu occupancy about 50%;
play a video the test app cpu occupancy about 50 - 60%;
exit the video the test app cpu occupancy about 50%;
#include <FL/Fl_Box.H>
#include <FL/x.H>
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Double_Window.H>
#include <process.h>
class D_Window : public Fl_Box
{
public:
int __w,__h;
D_Window();
void fl_draw_em(const char * c, int x , int y );
void copy_offscreen_tr(HBITMAP bitmap);
void copy_offscreen(HBITMAP bitmap);
void draw();
void DrawBG();
void DrawBgOffScreen();
void ReDrawBg();
void DrawText();
void DrawTextOffScreen();
void ReDrawText();
};
Fl_Offscreen TextOffScreen = 0;
Fl_Offscreen BgOffScreen = 0;
HDC CDC = 0;
void D_Window::fl_draw_em(const char * c, int x , int y )
{
Fl_Color tmp = fl_color();
fl_color(1,1,1);
fl_draw(c,x-1,y-1);
fl_draw(c,x+1,y+1);
fl_draw(c,x+1,y-1);
fl_draw(c,x-1,y+1);
fl_color(tmp);
fl_draw(c,x,y);
}
void D_Window::copy_offscreen_tr(HBITMAP bitmap)
{
if (!CDC)CDC = CreateCompatibleDC(fl_gc);
SelectObject(CDC, bitmap);
TransparentBlt(fl_gc,0,0,w(),h(),CDC,0,0,w(),h(),0);
}
void D_Window::copy_offscreen(HBITMAP bitmap)
{
if (!CDC)CDC = CreateCompatibleDC(fl_gc);
SelectObject(CDC, bitmap);
BitBlt(fl_gc,0,0, w(), h(), CDC,0,0, SRCCOPY);
}
D_Window::D_Window():Fl_Box(0,0,1000,800)
{
}
void D_Window::draw()
{
DrawBG();
DrawText();
/*
if (__w!=w()||__h!=h())
{
__w = w();
__h = h();
if(TextOffScreen)fl_delete_offscreen(TextOffScreen);
TextOffScreen = 0;
if(BgOffScreen)fl_delete_offscreen(BgOffScreen);
BgOffScreen = 0;
damage(FL_DAMAGE_ALL);
}
if (damage()=='5' || damage() == FL_DAMAGE_ALL)
{
DrawTextOffScreen();
}
if (damage()=='7' || damage() == FL_DAMAGE_ALL)
{
DrawBgOffScreen();
}
copy_offscreen(BgOffScreen);
copy_offscreen_tr(TextOffScreen);
clear_damage(FL_DAMAGE_ALL);
*/
}
void D_Window::DrawBG()
{
for(int i = 0 ; i < 25 ; i ++ )
{
for(int k = 0 ; k < 50 ; k ++ )
{
fl_color((i*50+k)%256);
fl_rectf(i*40,k*16,40,16);
}
}
}
void D_Window::DrawBgOffScreen()
{
if (!BgOffScreen)BgOffScreen = fl_create_offscreen(w(), h());
fl_begin_offscreen(BgOffScreen);
{
DrawBG();
}
fl_end_offscreen();
}
void D_Window::ReDrawBg()
{
damage('7');
}
void D_Window::DrawText()
{
for(int i = 0 ; i < 25 ; i ++ )
{
for(int k = 0 ; k < 50 ; k ++ )
{
fl_color(255-(i*50+k)%256);
fl_draw_em("FLTK",i*40+2,k*16+14);
}
}
}
void D_Window::DrawTextOffScreen()
{
if (!TextOffScreen)TextOffScreen = fl_create_offscreen(w(), h());
fl_begin_offscreen(TextOffScreen);
{
DrawText();
}
fl_end_offscreen();
}
void D_Window::ReDrawText()
{
damage('5');
}
Fl_Window * mw;
D_Window * test;
void Redraw(void *)
{
while(1)
{
test->ReDrawBg();
mw->redraw();
Fl::awake(mw);
_sleep(10);
}
}
int main(int argc, char** argv)
{
Fl::lock();
mw = new Fl_Window(0,0,1000,800);
test = new D_Window();
mw->end();
mw->show(argc,argv);
_beginthread(Redraw,0,0);
return Fl::run();
}
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