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STR #2331

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	Name/Time/Date	Text
	#1  szukw000 11:53 Mar 17, 2010	Attached is a simple image viewer for SharedImage. The test files are the files in test/images/:   coucou.gif  coucou.png  coucou.xpm  testimg.jpg  ulon.bmp JPG image: normal draw(). XPM image: excessive draw(). PNG image: excessive draw(). BMP image: normal draw(). GIF image: excessive draw(). Some other PNG images (mostly without transparency) behave normal. But when I move the mouse within the window or within the file_chooser, the image is redrawn. The same happens with ulon.bmp : moving the mouse within the file_chooser triggers a draw(). Current version:fltk-2.0.x-r6970 Re-Installing fltk-2.0.x-r6671: same behaviour. I have converted the viewer to fltk-1.3. No excessive draw(). No draw() during mouse move. winfried =================== FLTK 20 =================== #include <stdlib.h> #include <stdio.h> #include <string.h> #include <fltk/run.h> #include <fltk/draw.h> #include <fltk/filename.h> #include <fltk/Widget.h> #include <fltk/Window.h> #include <fltk/Button.h> #include <fltk/SharedImage.h> #include <fltk/file_chooser.h> #include <fltk/ask.h> #define HEADER_H 45 #define WINMIN_W 210 using namespace fltk; static Window *main_win; static SharedImage *sim; class Canvas: public Widget {     void draw(); public:     Canvas(int x,int y,int w,int h)     : Widget(x,y,w,h)    {    } }; static Canvas *canvas; static int draw_count; void Canvas::draw() { printf("DRAW %d\n",++draw_count);     if(sim)    {         int ww, iw, ih;         sim->measure(iw, ih);         if((ww = iw) < WINMIN_W) ww = WINMIN_W;     main_win->resize(ww, HEADER_H + ih);     resize(iw, ih);         sim->draw(0, 0);         return;    } } void get_image(const char *name) {         sim = SharedImage::get(name);   if(sim == NULL)   {         alert("No SharedImage possible for\n%s",name);         return;   }   canvas->redraw(); } static char name[1024]; static void file_cb(const char *n) {   if( !filename_exist(n)) return;   if(filename_isdir(n)) return;   strcpy(name, n);   main_win->label(filename_name(name));   get_image(name); } static void cancel_cb(Widget *, void *) {         exit(0); } static void load_cb(Widget *,void *) {         file_chooser_callback(file_cb);         file_chooser("Image File","*.{xpm,png,jpg,gif,bmp}", ".");         file_chooser_callback(NULL); } int main(int argc, char **argv) {     register_images();         main_win = new Window(400,HEADER_H+400);         main_win->label("Pixmap Browser");         main_win->begin();    {         Button *b = new Button(5,5,100,35,"Load");         b->callback(load_cb);    }    {         Button *b = new Button(105,5,100,35,"Cancel");         b->callback(cancel_cb);    }         canvas = new Canvas(0,HEADER_H,400,400);         main_win->end();         main_win->resizable(canvas);         main_win->show();         if (argv[1]) file_cb(argv[1]);         return run(); } =================== FLTK 13 =================== #include <stdlib.h> #include <stdio.h> #include <string.h> #include <FL/Fl.H> #include <FL/fl_draw.H> #include <FL/filename.H> #include <FL/Fl_Widget.H> #include <FL/Fl_Window.H> #include <FL/Fl_Button.H> #include <FL/Fl_Shared_Image.H> #include <FL/Fl_File_Chooser.H> #include <FL/fl_ask.H> #define HEADER_H 45 #define WINMIN_W 210 static Fl_Window *main_win; static Fl_Shared_Image *sim; class Canvas: public Fl_Widget {     void draw(); public:     Canvas(int x,int y,int w,int h)     : Fl_Widget(x,y,w,h)    {    } }; static Canvas *canvas; static int draw_count; void Canvas::draw() { printf("DRAW(%p) %d\n",(void*)sim,++draw_count);     if(sim)    {         int ww, iw, ih;         iw = sim->w(); ih = sim->h();         if((ww = iw) < WINMIN_W) ww = WINMIN_W;     main_win->resize(main_win->x(), main_win->y(), ww, HEADER_H + ih);     resize(x(), y(),iw, ih);         sim->draw(x(), y());         return;    } } void get_image(const char *name) {         sim = Fl_Shared_Image::get(name);         if(sim == NULL)    {         fl_alert("No SharedImage possible for\n%s",name);         return;    }         canvas->redraw(); } static char name[1024]; static void file_cb(const char *n) {   if(fl_filename_isdir(n)) return;   strcpy(name, n);   main_win->label(fl_filename_name(name));   get_image(name); } static void cancel_cb(Fl_Widget *, void *) {         exit(0); } static void load_cb(Fl_Widget *,void *) {         fl_file_chooser_callback(file_cb);         fl_file_chooser("Image File","*.{xpm,png,jpg,gif,bmp}", ".");         fl_file_chooser_callback(NULL); } int main(int argc, char **argv) {     fl_register_images();         main_win = new Fl_Window(200,200,400,HEADER_H+400);         main_win->label("Pixmap Browser");         main_win->begin();    {         Fl_Button *b = new Fl_Button(5,5,100,35,"Load");         b->callback(load_cb);    }    {         Fl_Button *b = new Fl_Button(105,5,100,35,"Cancel");         b->callback(cancel_cb);    }         canvas = new Canvas(0,HEADER_H,400,400);         main_win->end();         main_win->resizable(canvas);         main_win->show();         if (argv[1]) file_cb(argv[1]);         return Fl::run(); }

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