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aseprite/src/modules/gfx.cpp

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/* ASE - Allegro Sprite Editor
* Copyright (C) 2001-2011 David Capello
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <allegro.h>
#include <allegro/internal/aintern.h>
#include "gui/intern.h"
#include "gui/rect.h"
#include "gui/system.h"
#include "gui/theme.h"
#include "app.h"
#include "app/color_utils.h"
#include "console.h"
#include "core/cfg.h"
#include "gfx/point.h"
#include "gfx/rect.h"
#include "modules/gfx.h"
#include "modules/gui.h"
#include "modules/palettes.h"
#include "raster/blend.h"
#include "raster/image.h"
#include "raster/palette.h"
#include "skin/skin_theme.h"
#include "widgets/editor/editor.h"
using namespace gfx;
void dotted_mode(int offset)
{
/* these pattern were taken from The GIMP:
gimp-1.3.11/app/display/gimpdisplayshell-marching-ants.h */
static int pattern_data[8][8] = {
{
0xF0, /* ####---- */
0xE1, /* ###----# */
0xC3, /* ##----## */
0x87, /* #----### */
0x0F, /* ----#### */
0x1E, /* ---####- */
0x3C, /* --####-- */
0x78, /* -####--- */
},
{
0xE1, /* ###----# */
0xC3, /* ##----## */
0x87, /* #----### */
0x0F, /* ----#### */
0x1E, /* ---####- */
0x3C, /* --####-- */
0x78, /* -####--- */
0xF0, /* ####---- */
},
{
0xC3, /* ##----## */
0x87, /* #----### */
0x0F, /* ----#### */
0x1E, /* ---####- */
0x3C, /* --####-- */
0x78, /* -####--- */
0xF0, /* ####---- */
0xE1, /* ###----# */
},
{
0x87, /* #----### */
0x0F, /* ----#### */
0x1E, /* ---####- */
0x3C, /* --####-- */
0x78, /* -####--- */
0xF0, /* ####---- */
0xE1, /* ###----# */
0xC3, /* ##----## */
},
{
0x0F, /* ----#### */
0x1E, /* ---####- */
0x3C, /* --####-- */
0x78, /* -####--- */
0xF0, /* ####---- */
0xE1, /* ###----# */
0xC3, /* ##----## */
0x87, /* #----### */
},
{
0x1E, /* ---####- */
0x3C, /* --####-- */
0x78, /* -####--- */
0xF0, /* ####---- */
0xE1, /* ###----# */
0xC3, /* ##----## */
0x87, /* #----### */
0x0F, /* ----#### */
},
{
0x3C, /* --####-- */
0x78, /* -####--- */
0xF0, /* ####---- */
0xE1, /* ###----# */
0xC3, /* ##----## */
0x87, /* #----### */
0x0F, /* ----#### */
0x1E, /* ---####- */
},
{
0x78, /* -####--- */
0xF0, /* ####---- */
0xE1, /* ###----# */
0xC3, /* ##----## */
0x87, /* #----### */
0x0F, /* ----#### */
0x1E, /* ---####- */
0x3C, /* --####-- */
},
};
static BITMAP* pattern = NULL;
int x, y, fg, bg;
if (offset < 0) {
if (pattern) {
destroy_bitmap(pattern);
pattern = NULL;
}
drawing_mode(DRAW_MODE_SOLID, NULL, 0, 0);
return;
}
if (!pattern)
pattern = create_bitmap(8, 8);
offset = 7 - (offset & 7);
bg = makecol(0, 0, 0);
fg = makecol(255, 255, 255);
clear_bitmap(pattern);
for (y=0; y<8; y++)
for (x=0; x<8; x++)
putpixel(pattern, x, y,
(pattern_data[offset][y] & (1<<(7-x)))? fg: bg);
drawing_mode(DRAW_MODE_COPY_PATTERN, pattern, 0, 0);
}
void simple_dotted_mode(BITMAP* bmp, int fg, int bg)
{
static BITMAP* pattern = NULL;
if (pattern && bitmap_color_depth(pattern) != bitmap_color_depth(bmp))
destroy_bitmap(pattern);
pattern = create_bitmap_ex(bitmap_color_depth(bmp), 2, 2);
clear_bitmap(pattern);
putpixel(pattern, 0, 0, fg);
putpixel(pattern, 0, 1, bg);
putpixel(pattern, 1, 0, bg);
putpixel(pattern, 1, 1, fg);
drawing_mode(DRAW_MODE_COPY_PATTERN, pattern, 0, 0);
}
/**********************************************************************/
/* Rectangle Tracker (Save/Restore rectangles from/to the screen) */
struct RectTracker
{
BITMAP* bmp;
int x1, y1, x2, y2;
int npixel;
int *pixel;
};
static void do_rect(BITMAP* bmp, int x1, int y1, int x2, int y2, RectTracker* rt,
void (*proc)(BITMAP* bmp, int x, int y, RectTracker* rt))
{
int x, y, u1, u2, v1, v2;
if ((x2 < bmp->cl) || (x1 >= bmp->cr) ||
(y2 < bmp->ct) || (y1 >= bmp->cb))
return;
u1 = MID(bmp->cl, x1, bmp->cr-1);
u2 = MID(x1, x2, bmp->cr-1);
if ((y1 >= bmp->ct) && (y1 < bmp->cb)) {
for (x=u1; x<=u2; x++)
(*proc)(bmp, x, y1, rt);
}
if ((y2 >= bmp->ct) && (y2 < bmp->cb)) {
for (x=u1; x<=u2; x++)
(*proc)(bmp, x, y2, rt);
}
v1 = MID(bmp->ct, y1+1, bmp->cb-1);
v2 = MID(v1, y2-1, bmp->cb-1);
if ((x1 >= bmp->cl) && (x1 < bmp->cr)) {
for (y=v1; y<=v2; y++)
(*proc)(bmp, x1, y, rt);
}
if ((x2 >= bmp->cl) && (x2 < bmp->cr)) {
for (y=v1; y<=v2; y++)
(*proc)(bmp, x2, y, rt);
}
}
static void count_rect(BITMAP* bmp, int x, int y, RectTracker* rt)
{
rt->npixel++;
}
static void save_rect(BITMAP* bmp, int x, int y, RectTracker* rt)
{
rt->pixel[rt->npixel++] = getpixel(bmp, x, y);
}
static void restore_rect(BITMAP* bmp, int x, int y, RectTracker* rt)
{
putpixel(bmp, x, y, rt->pixel[rt->npixel++]);
}
RectTracker* rect_tracker_new(BITMAP* bmp, int x1, int y1, int x2, int y2)
{
RectTracker* rt;
int x, y;
jmouse_hide();
if (x1 > x2) { x = x1; x1 = x2; x2 = x; }
if (y1 > y2) { y = y1; y1 = y2; y2 = y; }
rt = new RectTracker;
rt->bmp = bmp;
rt->x1 = x1;
rt->y1 = y1;
rt->x2 = x2;
rt->y2 = y2;
rt->npixel = 0;
do_rect(bmp, x1, y1, x2, y2, rt, count_rect);
if (rt->npixel > 0)
rt->pixel = new int[rt->npixel];
else
rt->pixel = NULL;
rt->npixel = 0;
do_rect(bmp, x1, y1, x2, y2, rt, save_rect);
jmouse_show();
return rt;
}
void rect_tracker_free(RectTracker* rt)
{
jmouse_hide();
rt->npixel = 0;
do_rect(rt->bmp, rt->x1, rt->y1, rt->x2, rt->y2, rt, restore_rect);
delete[] rt->pixel;
delete rt;
jmouse_show();
}
/**********************************************************************/
/* Rectangles */
void bevel_box(BITMAP* bmp, int x1, int y1, int x2, int y2, int c1, int c2, int bevel)
{
hline(bmp, x1+bevel, y1, x2-bevel, c1); /* top */
hline(bmp, x1+bevel, y2, x2-bevel, c2); /* bottom */
vline(bmp, x1, y1+bevel, y2-bevel, c1); /* left */
vline(bmp, x2, y1+bevel, y2-bevel, c2); /* right */
line(bmp, x1, y1+bevel, x1+bevel, y1, c1); /* top-left */
line(bmp, x1, y2-bevel, x1+bevel, y2, c2); /* bottom-left */
line(bmp, x2-bevel, y1, x2, y1+bevel, c2); /* top-right */
line(bmp, x2-bevel, y2, x2, y2-bevel, c2); /* bottom-right */
}
void rectdotted(BITMAP* bmp, int x1, int y1, int x2, int y2, int fg, int bg)
{
simple_dotted_mode(bmp, fg, bg);
rect(bmp, x1, y1, x2, y2, 0);
solid_mode();
}
void rectgrid(BITMAP* bmp, int x1, int y1, int x2, int y2, int w, int h)
{
int x, y, u, v, c1, c2;
c1 = makecol_depth(bitmap_color_depth(bmp), 128, 128, 128);
c2 = makecol_depth(bitmap_color_depth(bmp), 192, 192, 192);
u = 0;
v = 0;
for (y=y1; y<=y2-h; y+=h) {
for (x=x1; x<=x2-w; x+=w)
rectfill(bmp, x, y, x+w-1, y+h-1, ((u++)&1)? c1: c2);
if (x <= x2)
rectfill(bmp, x, y, x2, y+h-1, ((u++)&1)? c1: c2);
u = (++v);
}
if (y <= y2) {
for (x=x1; x<=x2-w; x+=w)
rectfill(bmp, x, y, x+w-1, y2, ((u++)&1)? c1: c2);
if (x <= x2)
rectfill(bmp, x, y, x2, y2, ((u++)&1)? c1: c2);
}
}
/**********************************************************************/
/* Specials */
void draw_emptyset_symbol(BITMAP* bmp, const Rect& rc, int color)
{
Point center = rc.getCenter();
int size = MIN(rc.w, rc.h) - 8;
size = MID(4, size, 64);
circle(bmp, center.x, center.y, size*4/10, color);
line(bmp,
center.x-size/2, center.y+size/2,
center.x+size/2, center.y-size/2, color);
}
void draw_color(BITMAP* bmp, const Rect& rc, int imgtype, const Color& color)
{
Color::Type type = color.getType();
BITMAP* graph;
if (type == Color::MaskType) {
rectgrid(bmp, rc.x, rc.y, rc.x+rc.w-1, rc.y+rc.h-1, rc.w/4, rc.h/2);
return;
}
else if (type == Color::IndexType) {
int index = color.getIndex();
if (index >= 0 && index < get_current_palette()->size()) {
rectfill(bmp, rc.x, rc.y, rc.x+rc.w-1, rc.y+rc.h-1,
color_utils::color_for_allegro(color, bitmap_color_depth(bmp)));
}
else {
rectfill(bmp, rc.x, rc.y, rc.x+rc.w-1, rc.y+rc.h-1, makecol(0, 0, 0));
line(bmp, rc.x+rc.w-2, rc.y+1, rc.x+1, rc.y+rc.h-2, makecol(255, 255, 255));
}
return;
}
switch (imgtype) {
case IMAGE_INDEXED:
rectfill(bmp, rc.x, rc.y, rc.x+rc.w-1, rc.y+rc.h-1,
color_utils::color_for_allegro(Color::fromIndex(color_utils::color_for_image(color, imgtype)),
bitmap_color_depth(bmp)));
break;
case IMAGE_RGB:
graph = create_bitmap_ex(32, rc.w, rc.h);
if (!graph)
return;
{
int rgb_bitmap_color = color_utils::color_for_image(color, imgtype);
Color color2 = Color::fromRgb(_rgba_getr(rgb_bitmap_color),
_rgba_getg(rgb_bitmap_color),
_rgba_getb(rgb_bitmap_color));
rectfill(graph, 0, 0, rc.w-1, rc.h-1,
color_utils::color_for_allegro(color2, 32));
}
blit(graph, bmp, 0, 0, rc.x, rc.y, rc.w, rc.h);
destroy_bitmap(graph);
break;
case IMAGE_GRAYSCALE:
graph = create_bitmap_ex(32, rc.w, rc.h);
if (!graph)
return;
{
int gray_bitmap_color = color_utils::color_for_image(color, imgtype);
Color color2 = Color::fromGray(_graya_getv(gray_bitmap_color));
rectfill(graph, 0, 0, rc.w-1, rc.h-1,
color_utils::color_for_allegro(color2, 32));
}
blit(graph, bmp, 0, 0, rc.x, rc.y, rc.w, rc.h);
destroy_bitmap(graph);
break;
}
}
void draw_color_button(BITMAP* bmp,
const Rect& rc,
bool outer_nw, bool outer_n, bool outer_ne, bool outer_e,
bool outer_se, bool outer_s, bool outer_sw, bool outer_w,
int imgtype, const Color& color, bool hot, bool drag)
{
SkinTheme* theme = (SkinTheme*)CurrentTheme::get();
int scale = jguiscale();
// Draw background (the color)
draw_color(bmp,
Rect(rc.x+1*jguiscale(),
rc.y+1*jguiscale(),
rc.w-((outer_e) ? 2*jguiscale(): 1*jguiscale()),
rc.h-((outer_s) ? 2*jguiscale(): 1*jguiscale())), imgtype, color);
// Draw opaque border
{
int parts[8] = {
outer_nw ? PART_COLORBAR_0_NW: PART_COLORBAR_3_NW,
outer_n ? PART_COLORBAR_0_N : PART_COLORBAR_2_N,
outer_ne ? PART_COLORBAR_1_NE: (outer_e ? PART_COLORBAR_3_NE: PART_COLORBAR_2_NE),
outer_e ? PART_COLORBAR_1_E : PART_COLORBAR_0_E,
outer_se ? PART_COLORBAR_3_SE: (outer_s ? PART_COLORBAR_2_SE: (outer_e ? PART_COLORBAR_1_SE: PART_COLORBAR_0_SE)),
outer_s ? PART_COLORBAR_2_S : PART_COLORBAR_0_S,
outer_sw ? PART_COLORBAR_2_SW: (outer_s ? PART_COLORBAR_3_SW: PART_COLORBAR_1_SW),
outer_w ? PART_COLORBAR_0_W : PART_COLORBAR_1_W,
};
theme->draw_bounds_array(bmp, rc.x, rc.y, rc.x+rc.w-1, rc.y+rc.h-1, parts);
}
// Draw hot
if (hot) {
theme->draw_bounds_nw(bmp,
rc.x, rc.y,
rc.x+rc.w-1,
rc.y+rc.h-1 - (outer_s ? 1*scale: 0),
PART_COLORBAR_BORDER_HOTFG_NW);
}
}
void draw_progress_bar(BITMAP* bmp,
int x1, int y1, int x2, int y2,
float progress)
{
int w = x2 - x1 + 1;
int u = (int)((float)(w-2)*progress);
u = MID(0, u, w-2);
rect(bmp, x1, y1, x2, y2, ji_color_foreground());
if (u > 0)
rectfill(bmp, x1+1, y1+1, x1+u, y2-1, ji_color_selected());
if (1+u < w-2)
rectfill(bmp, x1+u+1, y1+1, x2-1, y2-1, ji_color_background());
}
/************************************************************************/
/* Font related */
int character_length(FONT* font, int chr)
{
return font->vtable->char_length(font, chr);
}
/* renders a character of the font centered in x and y */
void render_character(BITMAP* bmp, FONT* font, int chr, int x, int y, int fg, int bg)
{
font->vtable->render_char(font, chr, fg, bg, bmp, x, y);
}
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