static void render(void)
{
ALLEGRO_COLOR white = al_map_rgba_f(1, 1, 1, 1);
ALLEGRO_COLOR black = al_map_rgba_f(0, 0, 0, 1);
ALLEGRO_COLOR red = al_map_rgba_f(1, 0, 0, 1);
ALLEGRO_COLOR green = al_map_rgba_f(0, 0.5, 0, 1);
ALLEGRO_COLOR blue = al_map_rgba_f(0.1, 0.2, 1, 1);
int x, y, w, h, as, de, xpos, ypos;
int target_w, target_h;
ALLEGRO_USTR_INFO info, sub_info;
const ALLEGRO_USTR *u;
al_clear_to_color(white);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f1, black, 50, 50, 0, "Tulip (kerning)");
al_draw_textf(ex.f2, black, 50, 100, 0, "Tulip (no kerning)");
al_draw_textf(ex.f3, black, 50, 200, 0, "This font has a size of 12 pixels, "
"the one above has 48 pixels.");
al_hold_bitmap_drawing(false);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f3, red, 50, 220, 0, "The color can simply be changed.");
al_hold_bitmap_drawing(false);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f3, green, 50, 240, 0, "Some unicode symbols:");
al_draw_textf(ex.f3, green, 50, 260, 0, "%s", get_string("symbols1"));
al_draw_textf(ex.f3, green, 50, 280, 0, "%s", get_string("symbols2"));
al_draw_textf(ex.f3, green, 50, 300, 0, "%s", get_string("symbols3"));
#define OFF(x) al_ustr_offset(u, x)
#define SUB(x, y) al_ref_ustr(&sub_info, u, OFF(x), OFF(y))
u = al_ref_cstr(&info, get_string("substr1"));
al_draw_ustr(ex.f3, green, 50, 320, 0, SUB(0, 6));
u = al_ref_cstr(&info, get_string("substr2"));
al_draw_ustr(ex.f3, green, 50, 340, 0, SUB(7, 11));
u = al_ref_cstr(&info, get_string("substr3"));
al_draw_ustr(ex.f3, green, 50, 360, 0, SUB(4, 11));
u = al_ref_cstr(&info, get_string("substr4"));
al_draw_ustr(ex.f3, green, 50, 380, 0, SUB(0, 11));
al_draw_textf(ex.f5, black, 50, 420, 0, "forced monochrome");
al_hold_bitmap_drawing(false);
target_w = al_get_bitmap_width(al_get_target_bitmap());
target_h = al_get_bitmap_height(al_get_target_bitmap());
xpos = target_w - 10;
ypos = target_h - 10;
al_get_text_dimensions(ex.f4, "Allegro", &x, &y, &w, &h);
as = al_get_font_ascent(ex.f4);
de = al_get_font_descent(ex.f4);
xpos -= w;
ypos -= h;
x += xpos;
y += ypos;
al_draw_rectangle(x, y, x + w, y + h, black, 0);
al_draw_line(x, y + as, x + w, y + as, black, 0);
al_draw_line(x, y + as + de, x + w, y + as + de, black, 0);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f4, blue, xpos, ypos, 0, "Allegro");
al_hold_bitmap_drawing(false);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f3, black, target_w, 0, ALLEGRO_ALIGN_RIGHT,
"%.1f FPS", ex.fps);
al_hold_bitmap_drawing(false);
}
static void render(void)
{
ALLEGRO_COLOR white = al_map_rgba_f(1, 1, 1, 1);
ALLEGRO_COLOR black = al_map_rgba_f(0, 0, 0, 1);
ALLEGRO_COLOR red = al_map_rgba_f(1, 0, 0, 1);
ALLEGRO_COLOR green = al_map_rgba_f(0, 0.5, 0, 1);
ALLEGRO_COLOR blue = al_map_rgba_f(0.1, 0.2, 1, 1);
ALLEGRO_COLOR purple = al_map_rgba_f(0.3, 0.1, 0.2, 1);
int x, y, w, h, as, de, xpos, ypos;
unsigned int index;
int target_w, target_h;
ALLEGRO_USTR_INFO info, sub_info;
const ALLEGRO_USTR *u;
ALLEGRO_USTR *tulip = al_ustr_new("Tulip");
ALLEGRO_USTR *dimension_text = al_ustr_new("Tulip");
ALLEGRO_USTR *vertical_text = al_ustr_new("Rose.");
al_clear_to_color(white);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f1, black, 50, 20, 0, "Tulip (kerning)");
al_draw_textf(ex.f2, black, 50, 80, 0, "Tulip (no kerning)");
x = 50;
y = 140;
for (index = 0; index < al_ustr_length(dimension_text); index ++) {
int cp = ustr_at(dimension_text, index);
int bbx, bby, bbw, bbh;
al_get_glyph_dimensions(ex.f2, cp, &bbx, &bby, &bbw, &bbh);
al_draw_rectangle(x + bbx + 0.5, y + bby + 0.5, x + bbx + bbw - 0.5, y + bby + bbh - 0.5, blue, 1);
al_draw_rectangle(x + 0.5, y + 0.5, x + bbx + bbw - 0.5, y + bby + bbh - 0.5, green, 1);
al_draw_glyph(ex.f2, purple, x, y, cp);
x += al_get_glyph_advance(ex.f2, cp, ALLEGRO_NO_KERNING);
}
al_draw_line(50.5, y+0.5, x+0.5, y+0.5, red, 1);
al_draw_textf(ex.f2, black, x + 10, y, 0, "(dimensions)");
al_draw_textf(ex.f3, black, 50, 200, 0, "This font has a size of 12 pixels, "
"the one above has 48 pixels.");
al_hold_bitmap_drawing(false);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f3, red, 50, 220, 0, "The color can simply be changed.🐊← fallback glyph");
al_hold_bitmap_drawing(false);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f3, green, 50, 240, 0, "Some unicode symbols:");
al_draw_textf(ex.f3, green, 50, 260, 0, "%s", get_string("symbols1"));
al_draw_textf(ex.f3, green, 50, 280, 0, "%s", get_string("symbols2"));
al_draw_textf(ex.f3, green, 50, 300, 0, "%s", get_string("symbols3"));
#define OFF(x) al_ustr_offset(u, x)
#define SUB(x, y) al_ref_ustr(&sub_info, u, OFF(x), OFF(y))
u = al_ref_cstr(&info, get_string("substr1"));
al_draw_ustr(ex.f3, green, 50, 320, 0, SUB(0, 6));
u = al_ref_cstr(&info, get_string("substr2"));
al_draw_ustr(ex.f3, green, 50, 340, 0, SUB(7, 11));
u = al_ref_cstr(&info, get_string("substr3"));
al_draw_ustr(ex.f3, green, 50, 360, 0, SUB(4, 11));
u = al_ref_cstr(&info, get_string("substr4"));
al_draw_ustr(ex.f3, green, 50, 380, 0, SUB(0, 11));
al_draw_textf(ex.f5, black, 50, 395, 0, "forced monochrome");
/* Glyph rendering tests. */
al_draw_textf(ex.f3, red, 50, 410, 0, "Glyph adv Tu: %d, draw: ",
al_get_glyph_advance(ex.f3, 'T', 'u'));
x = 50;
y = 425;
for (index = 0; index < al_ustr_length(tulip); index ++) {
int cp = ustr_at(tulip, index);
/* Use al_get_glyph_advance for the stride, with no kerning. */
al_draw_glyph(ex.f3, red, x, y, cp);
x += al_get_glyph_advance(ex.f3, cp, ALLEGRO_NO_KERNING);
}
x = 50;
y = 440;
/* First draw a red string using al_draw_text, that should be hidden
* completely by the same text drawing in green per glyph
* using al_draw_glyph and al_get_glyph_advance below. */
al_draw_ustr(ex.f3, red, x, y, 0, tulip);
for (index = 0; index < al_ustr_length(tulip); index ++) {
int cp = ustr_at(tulip, index);
int ncp = (index < (al_ustr_length(tulip) - 1)) ?
ustr_at(tulip, index + 1) : ALLEGRO_NO_KERNING;
/* Use al_get_glyph_advance for the stride and apply kerning. */
al_draw_glyph(ex.f3, green, x, y, cp);
x += al_get_glyph_advance(ex.f3, cp, ncp);
}
x = 50;
y = 466;
al_draw_ustr(ex.f3, red, x, y, 0, tulip);
for (index = 0; index < al_ustr_length(tulip); index ++) {
int cp = ustr_at(tulip, index);
int bbx, bby, bbw, bbh;
al_get_glyph_dimensions(ex.f3, cp, &bbx, &bby, &bbw, &bbh);
al_draw_glyph(ex.f3, blue, x, y, cp);
x += bbx + bbw;
}
x = 10;
y = 30;
for (index = 0; index < al_ustr_length(vertical_text); index ++) {
int bbx, bby, bbw, bbh;
int cp = ustr_at(vertical_text, index);
/* Use al_get_glyph_dimensions for the height to apply. */
al_get_glyph_dimensions(ex.f3, cp, &bbx, &bby, &bbw, &bbh);
al_draw_glyph(ex.f3, green, x, y, cp);
y += bby;
y += bbh;
}
x = 30;
y = 30;
for (index = 0; index < al_ustr_length(vertical_text); index ++) {
int bbx, bby, bbw, bbh;
int cp = ustr_at(vertical_text, index);
/* Use al_get_glyph_dimensions for the height to apply, here bby is
* omited for the wrong result. */
al_get_glyph_dimensions(ex.f3, cp, &bbx, &bby, &bbw, &bbh);
al_draw_glyph(ex.f3, red, x, y, cp);
y += bbh;
}
al_hold_bitmap_drawing(false);
target_w = al_get_bitmap_width(al_get_target_bitmap());
target_h = al_get_bitmap_height(al_get_target_bitmap());
xpos = target_w - 10;
ypos = target_h - 10;
al_get_text_dimensions(ex.f4, "Allegro", &x, &y, &w, &h);
as = al_get_font_ascent(ex.f4);
de = al_get_font_descent(ex.f4);
xpos -= w;
ypos -= h;
x += xpos;
y += ypos;
al_draw_rectangle(x, y, x + w - 0.5, y + h - 0.5, black, 0);
al_draw_line(x+0.5, y + as + 0.5, x + w - 0.5, y + as + 0.5, black, 0);
al_draw_line(x + 0.5, y + as + de + 0.5, x + w - 0.5, y + as + de + 0.5, black, 0);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f4, blue, xpos, ypos, 0, "Allegro");
al_hold_bitmap_drawing(false);
al_hold_bitmap_drawing(true);
al_draw_textf(ex.f3, black, target_w, 0, ALLEGRO_ALIGN_RIGHT,
"%.1f FPS", ex.fps);
al_draw_textf(ex.f3, black, 0, 0, 0, "%s: %d unicode ranges", font_file,
ex.ranges_count);
al_hold_bitmap_drawing(false);
}
/**
Returns the font descent.
@return the font descent.
*/
int getDescent() const {
return al_get_font_descent(get());
}
