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Polygon fill: Be a better citizen

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Remove our preview if switching out of the tool.
Do not wipe out previous work when switching into the tool
(it seems Tux Paint calls "set_color()" _before_ "switchin()"!?)
This commit is contained in:
Bill Kendrick 2024-04-08 20:55:27 -07:00
parent 667f69c733
commit 5139985781
1 changed files with 14 additions and 3 deletions
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17
magic/src/polyfill.c
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@ -2,11 +2,12 @@
A Magic tool for Tux Paint that creates a filled polygon.
by Bill Kendrick <bill@newbreedsoftware.com>
with help from Pere Pujal Carabantes
Scanline polygon fill routine based on public-domain code
by Darel Rex Finley, 2007 <https://alienryderflex.com/polygon_fill/>
Last updated: March 28, 2024
Last updated: April 8, 2024
*/
@ -49,7 +50,7 @@ int polyfill_pt_y[MAX_PTS];
int polyfill_num_pts = 0;
int polyfill_editing = MAX_PTS;
int polyfill_dragged = 0;
int polyfill_active = 0;
Mix_Chunk *snd_effects[NUM_TOOLS];
@ -375,7 +376,10 @@ polyfill_release(magic_api * api, int which,
void polyfill_set_color(magic_api * api, int which, SDL_Surface * canvas, SDL_Surface * snapshot, Uint8 r, Uint8 g, Uint8 b, SDL_Rect * update_rect)
{
polyfill_color = SDL_MapRGB(canvas->format, r, g, b);
polyfill_draw_preview(api, canvas, 1);
if (polyfill_active) {
polyfill_draw_preview(api, canvas, 1);
}
}
void polyfill_set_size(magic_api * api, int which, int mode, SDL_Surface * canvas, SDL_Surface * snapshot, Uint8 size, SDL_Rect * update_rect)
@ -414,6 +418,8 @@ void polyfill_switchin(magic_api * api, int which, int mode,
if (polyfill_snapshot != NULL) {
SDL_BlitSurface(canvas, NULL, polyfill_snapshot, NULL);
}
polyfill_active = 1;
}
void polyfill_switchout(magic_api * api, int which, int mode,
@ -421,6 +427,11 @@ void polyfill_switchout(magic_api * api, int which, int mode,
{
polyfill_num_pts = 0;
polyfill_editing = MAX_PTS;
polyfill_active = 0;
if (polyfill_snapshot != NULL) {
SDL_BlitSurface(polyfill_snapshot, NULL, canvas, NULL);
}
}
/* Based on public-domain code by Darel Rex Finley, 2007