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Improved handling of scroll button state to prevent it from getting into

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an infinite loop.  (Fixes bug #1396706)
This commit is contained in:
William Kendrick 2006-06-03 07:18:48 +00:00
parent 9fae1a8a25
commit e26fb7b879
2 changed files with 50 additions and 34 deletions
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3
docs/CHANGES.txt
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@ -177,6 +177,9 @@ $Id$
* Bottom of grass would initially be clipped due to incorrect canvas
updating. Fixed.
* Improved handling of scroll button state to prevent it from getting
into an infinite loop. (Fixes bug #1396706)
2005.November.26 (0.9.15b)

81
src/tuxpaint.c
View file

@ -762,7 +762,8 @@ static int fullscreen, disable_quit, simple_shapes,
dont_do_xor, use_print_config, dont_load_stamps, noshortcuts,
no_button_distinction,
mirrorstamps, disable_stamp_controls, disable_save, ok_to_use_lockfile,
alt_print_command_default;
alt_print_command_default,
scrolling = 0;
static int want_alt_printcommand;
static int starter_mirrored, starter_flipped;
static int recording, playing;
@ -1137,6 +1138,8 @@ static int charsize(char c);
#define USEREVENT_TEXT_UPDATE 1
#define TP_SDL_MOUSEBUTTONSCROLL (SDL_USEREVENT + 1)
static int bypass_splash_wait;
// Wait for a keypress or mouse click
@ -1446,8 +1449,8 @@ static void mainloop(void)
int *thing_scroll;
int cur_thing, do_draw, old_tool,
tmp_int, max;
int cur_time, last_print_time, scrolling, ignoring_motion;
SDL_TimerID scrolltimer;
int cur_time, last_print_time, ignoring_motion;
SDL_TimerID scrolltimer = NULL;
SDL_Event event;
SDLKey key, key_down;
Uint16 key_unicode;
@ -1782,7 +1785,8 @@ static void mainloop(void)
img_mouse, img_mouse_click, NULL, 1);
}
}
else if (event.type == SDL_MOUSEBUTTONDOWN &&
else if ((event.type == SDL_MOUSEBUTTONDOWN ||
event.type == TP_SDL_MOUSEBUTTONSCROLL) &&
event.button.button <= 3)
{
if (HIT(r_tools))
@ -2357,24 +2361,39 @@ static void mainloop(void)
*thing_scroll += is_upper ? -gd_items.cols : gd_items.cols;
do_draw = 1;
playsound(screen, 1, SND_SCROLL, 1, SNDPOS_RIGHT, SNDDIST_NEAR);
if (!scrolling)
if (scrolltimer != NULL)
{
SDL_RemoveTimer(scrolltimer);
scrolltimer = NULL;
}
if (!scrolling && event.type == SDL_MOUSEBUTTONDOWN)
{
//printf("Starting scrolling\n");
memcpy(&scrolltimer_event, &event, sizeof(SDL_Event));
/* FIXME: Make delay value changable: */
scrolltimer = SDL_AddTimer(REPEAT_SPEED, scrolltimer_callback, (void*) &scrolltimer_event);
scrolltimer_event.type = TP_SDL_MOUSEBUTTONSCROLL;
scrolling = 1;
scrolltimer = SDL_AddTimer(REPEAT_SPEED, scrolltimer_callback, (void*) &scrolltimer_event);
}
else
{
SDL_RemoveTimer(scrolltimer);
//printf("Continuing scrolling\n");
scrolltimer = SDL_AddTimer(REPEAT_SPEED / 3, scrolltimer_callback, (void*) &scrolltimer_event);
}
if (*thing_scroll == 0)
{
do_setcursor(cursor_arrow);
if (scrolling)
{
SDL_RemoveTimer(scrolltimer);
if (scrolltimer != NULL)
{
SDL_RemoveTimer(scrolltimer);
scrolltimer = NULL;
}
scrolling = 0;
}
}
@ -2758,30 +2777,9 @@ static void mainloop(void)
*thing_scroll += is_upper ? -gd_items.cols : gd_items.cols;
do_draw = 1;
playsound(screen, 1, SND_SCROLL, 1, SNDPOS_RIGHT, SNDDIST_NEAR);
#if 0
if (!scrolling)
{
memcpy(&scrolltimer_event, &event, sizeof(SDL_Event));
/* FIXME: Make delay value changable: */
scrolltimer = SDL_AddTimer(REPEAT_SPEED, scrolltimer_callback, (void*) &scrolltimer_event);
scrolling = 1;
}
else
{
SDL_RemoveTimer(scrolltimer);
scrolltimer = SDL_AddTimer(REPEAT_SPEED / 3, scrolltimer_callback, (void*) &scrolltimer_event);
}
#endif
if (*thing_scroll == 0)
{
do_setcursor(cursor_arrow);
#if 0
if (scrolling)
{
SDL_RemoveTimer(scrolltimer);
scrolling = 0;
}
#endif
}
}
}
@ -2852,8 +2850,14 @@ static void mainloop(void)
{
if (scrolling)
{
SDL_RemoveTimer(scrolltimer);
if (scrolltimer != NULL)
{
SDL_RemoveTimer(scrolltimer);
scrolltimer = NULL;
}
scrolling = 0;
//printf("Killing scrolling\n");
}
if (button_down)
@ -12957,9 +12961,18 @@ static char * textdir(const char * const str)
static Uint32 scrolltimer_callback(Uint32 interval, void *param)
{
SDL_PushEvent((SDL_Event*)param);
return interval;
//printf("scrolltimer_callback(%d) -- ", interval);
if (scrolling)
{
//printf("(Still scrolling)\n");
SDL_PushEvent((SDL_Event*)param);
return interval;
}
else
{
//printf("(all done)\n");
return 0;
}
}