4coder/4ed_render_fill.cpp

185 lines
5.5 KiB
C++

/*
* Mr. 4th Dimention - Allen Webster
*
* 10.11.2017
*
* Render buffer fill helpers.
*
*/
// TOP
inline void
draw_push_clip(Render_Target *target, i32_Rect clip_box){
render_push_clip(target, clip_box);
}
inline i32_Rect
draw_pop_clip(Render_Target *target){
i32_Rect result = render_pop_clip(target);
return(result);
}
inline void
draw_change_clip(Render_Target *target, i32_Rect clip_box){
render_change_clip(target, clip_box);
}
internal void
begin_render_section(Render_Target *target, System_Functions *system){
target->clip_top = -1;
i32_Rect clip;
clip.x0 = 0;
clip.y0 = 0;
clip.x1 = target->width;
clip.y1 = target->height;
draw_push_clip(target, clip);
}
internal void
end_render_section(Render_Target *target, System_Functions *system){
Assert(target->clip_top == 0);
}
#define CmdHeader(t) cmd.header.size = sizeof(cmd), cmd.header.type = t
internal void
draw_rectangle(Render_Target *target, f32_Rect rect, u32 color){
Render_Command_Rectangle cmd = {0};
CmdHeader(RenCom_Rectangle);
cmd.rect = rect;
cmd.color = color;
void *h = render_begin_push(target, &cmd, cmd.header.size);
render_end_push(target, h);
}
internal void
draw_rectangle(Render_Target *target, i32_Rect rect, u32 color){
draw_rectangle(target, f32R(rect), color);
}
internal void
draw_rectangle_outline(Render_Target *target, f32_Rect rect, u32 color){
Render_Command_Rectangle cmd = {0};
CmdHeader(RenCom_Outline);
cmd.rect = rect;
cmd.color = color;
void *h = render_begin_push(target, &cmd, cmd.header.size);
render_end_push(target, h);
}
inline void
draw_rectangle_outline(Render_Target *target, i32_Rect rect, u32 color){
draw_rectangle_outline(target, f32R(rect), color);
}
internal void
draw_margin(Render_Target *target, i32_Rect outer, i32_Rect inner, u32 color){
draw_rectangle(target, i32R(outer.x0, outer.y0, outer.x1, inner.y0), color);
draw_rectangle(target, i32R(outer.x0, inner.y1, outer.x1, outer.y1), color);
draw_rectangle(target, i32R(outer.x0, inner.y0, inner.x0, inner.y1), color);
draw_rectangle(target, i32R(inner.x1, inner.y0, outer.x1, inner.y1), color);
}
inline void
draw_margin(Render_Target *target, i32_Rect outer, i32 width, u32 color){
i32_Rect inner = get_inner_rect(outer, width);
draw_margin(target, outer, inner, color);
}
internal void
draw_font_glyph(Render_Target *target, Face_ID font_id, u32 codepoint, f32 x, f32 y, u32 color){
Render_Command_Glyph cmd;
CmdHeader(RenCom_Glyph);
cmd.pos.x = x;
cmd.pos.y = y;
cmd.color = color;
cmd.font_id = font_id;
cmd.codepoint = codepoint;
void *h = render_begin_push(target, &cmd, cmd.header.size);
render_end_push(target, h);
}
internal f32
draw_string_base(System_Functions *system, Render_Target *target, Face_ID font_id, String str_, i32 x_, i32 y_, u32 color){
f32 x = 0;
Font_Pointers font = system->font.get_pointers_by_id(font_id);
if (font.valid != 0){
f32 y = (f32)y_;
x = (f32)x_;
f32 byte_advance = font.metrics->byte_advance;
f32 *sub_advances = font.metrics->sub_advances;
u8 *str = (u8*)str_.str;
u8 *str_end = str + str_.size;
Translation_State tran = {0};
Translation_Emits emits = {0};
for (u32 i = 0; str < str_end; ++str, ++i){
translating_fully_process_byte(system, font, &tran, *str, i, str_.size, &emits);
for (TRANSLATION_DECL_EMIT_LOOP(J, emits)){
TRANSLATION_DECL_GET_STEP(step, behavior, J, emits);
if (behavior.do_codepoint_advance){
u32 codepoint = step.value;
if (color != 0){
draw_font_glyph(target, font_id, codepoint, x, y, color);
}
x += font_get_glyph_advance(system, font.settings, font.metrics, font.pages, codepoint);
}
else if (behavior.do_number_advance){
u8 n = (u8)(step.value);
if (color != 0){
u8 cs[3];
cs[0] = '\\';
byte_to_ascii(n, cs+1);
f32 xx = x;
for (u32 j = 0; j < 3; ++j){
draw_font_glyph(target, font_id, cs[j], xx, y, color);
xx += sub_advances[j];
}
}
x += byte_advance;
}
}
}
}
return(x);
}
internal f32
draw_string(System_Functions *system, Render_Target *target, Face_ID font_id, String str, i32 x, i32 y, u32 color){
f32 w = draw_string_base(system, target, font_id, str, x, y, color);
return(w);
}
internal f32
draw_string(System_Functions *system, Render_Target *target, Face_ID font_id, char *str, i32 x, i32 y, u32 color){
String string = make_string_slowly(str);
f32 w = draw_string_base(system, target, font_id, string, x, y, color);
return(w);
}
internal f32
font_string_width(System_Functions *system, Render_Target *target, Face_ID font_id, String str){
f32 w = draw_string_base(system, target, font_id, str, 0, 0, 0);
return(w);
}
internal f32
font_string_width(System_Functions *system, Render_Target *target, Face_ID font_id, char *str){
String string = make_string_slowly(str);
f32 w = draw_string_base(system, target, font_id, string, 0, 0, 0);
return(w);
}
// BOTTOM