This is an automatic mail response.
Please note that "fltk.bugs" is for the automated bug-tracking
system and not for direct posting as such. If you want to report this
as a bug, open a Software Trouble Report (STR) by using the Submit Bug
link at http://www.fltk.org/str.php
Few real people watch fltk.bugs, and even fewer will reply, so you
might get a better response if you post somewhere more accessible:
- if you want to discuss how to do things in FLTK in your own projects,
please post to fltk.general
- if you want to discuss issues around FLTK's own code and development
please post to fltk.development
On 13.03.2010, at 19:44, w. szukalski wrote:
> 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();
> }
>
> _______________________________________________
> fltk-bugs mailing list
> [email protected]
> http://lists.easysw.com/mailman/listinfo/fltk-bugs
_______________________________________________
fltk-bugs mailing list
[email protected]
http://lists.easysw.com/mailman/listinfo/fltk-bugs
