notgne2/tuxpaint-pencil-sharpener
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Continuing to improve fill anti-aliasing

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This commit is contained in:
Bill Kendrick 2021-03-08 01:18:00 -08:00
parent 3b5a0a1586
commit 866d5190bf
3 changed files with 64 additions and 40 deletions
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31
src/tuxpaint.c
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@ -3,7 +3,7 @@
Tux Paint - A simple drawing program for children.
Copyright (c) 2002-2020
Copyright (c) 2002-2021
by various contributors; see AUTHORS.txt
http://www.tuxpaint.org/
@ -22,7 +22,7 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(See COPYING.txt)
June 14, 2002 - March 7, 2021
June 14, 2002 - March 8, 2021
*/
@ -1831,7 +1831,7 @@ static unsigned cur_color;
static int cur_tool, cur_brush, old_tool;
static int cur_stamp[MAX_STAMP_GROUPS];
static int cur_shape, cur_magic;
static int cur_font, cur_eraser, cur_fill;
static int cur_font, cur_eraser, cur_fill, fill_drag_started;
static int cursor_left, cursor_x, cursor_y, cursor_textwidth; /* canvas-relative */
static int old_cursor_x, old_cursor_y;
static int cur_label, cur_select;
@ -4543,6 +4543,8 @@ static void mainloop(void)
if (would_flood_fill(canvas, draw_color, canv_color))
{
int x1, y1, x2, y2;
SDL_Surface * last;
int undo_ctr;
/* We only bother recording an undo buffer
(which may kill our redos) if we're about
@ -4551,6 +4553,14 @@ static void mainloop(void)
x1 = x2 = old_x;
y1 = y2 = old_y;
if (cur_undo > 0)
undo_ctr = cur_undo - 1;
else
undo_ctr = NUM_UNDO_BUFS - 1;
last = undo_bufs[undo_ctr];
for (y1 = 0; y1 < canvas->h; y1++) {
for (x1 = 0; x1 < canvas->w; x1++) {
sim_flood_touched[(y1 * canvas->w) + x1] = 0;
@ -4560,7 +4570,7 @@ static void mainloop(void)
if (cur_fill == FILL_FLOOD)
{
/* Flood fill a solid color */
do_flood_fill(screen, canvas, old_x, old_y, draw_color, canv_color, &x1, &y1, &x2, &y2, sim_flood_touched);
do_flood_fill(screen, last, canvas, old_x, old_y, draw_color, canv_color, &x1, &y1, &x2, &y2, sim_flood_touched);
update_canvas(x1, y1, x2, y2);
}
@ -4573,7 +4583,7 @@ static void mainloop(void)
canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask, canvas->format->Amask);
SDL_BlitSurface(canvas, NULL, tmp_canvas, NULL);
simulate_flood_fill(screen, tmp_canvas, old_x, old_y, draw_color, canv_color, &x1, &y1, &x2, &y2, sim_flood_touched);
simulate_flood_fill(screen, last, tmp_canvas, old_x, old_y, draw_color, canv_color, &x1, &y1, &x2, &y2, sim_flood_touched);
SDL_FreeSurface(tmp_canvas);
sim_flood_x1 = x1;
@ -4592,6 +4602,7 @@ static void mainloop(void)
/* Start a linear gradient */
draw_linear_gradient(canvas, canvas, sim_flood_x1, sim_flood_y1, sim_flood_x2, sim_flood_y2,
fill_x, fill_y, old_x, old_y + 1, draw_color, sim_flood_touched);
fill_drag_started = 1;
}
update_canvas(x1, y1, x2, y2);
@ -5219,6 +5230,10 @@ static void mainloop(void)
update_screen_rect(&kbd_rect);
// SDL_Flip(screen);
}
else if (cur_tool == TOOL_FILL)
{
fill_drag_started = 0;
}
}
button_down = 0;
}
@ -5526,7 +5541,7 @@ static void mainloop(void)
sz = calc_eraser_size(cur_eraser);
rect_xor(new_x - sz / 2, new_y - sz / 2, new_x + sz / 2, new_y + sz / 2);
}
else if (cur_tool == TOOL_FILL && cur_fill == FILL_GRADIENT_LINEAR)
else if (cur_tool == TOOL_FILL && cur_fill == FILL_GRADIENT_LINEAR && fill_drag_started)
{
Uint32 draw_color, canv_color;
int undo_ctr;
@ -24674,7 +24689,7 @@ static void setup(void)
printf("%s\n", tmp_str);
#endif
safe_snprintf(tmp_str, sizeof(tmp_str), "© 2002–2020 Bill Kendrick et al.");
safe_snprintf(tmp_str, sizeof(tmp_str), "© 2002–2021 Bill Kendrick et al.");
tmp_surf = render_text(medium_font, tmp_str, black);
dest.x = 10;
dest.y = WINDOW_HEIGHT - img_progress->h - (tmp_surf->h * 2);
@ -25276,6 +25291,8 @@ static void claim_to_be_ready(void)
cur_magic = 0;
cur_font = 0;
cur_eraser = 0;
cur_fill = 0;
fill_drag_started = 0;
cur_label = LABEL_LABEL;
cur_select = 0;
cursor_left = -1;