Change file naming scheme
This commit is contained in:
Krzosa Karol
242
sf_ui.cpp
Normal file
242
sf_ui.cpp
Normal file
@@ -0,0 +1,242 @@
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enum UIWidgetKind {
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UIWidgetKind_None,
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UIWidgetKind_Boolean,
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UIWidgetKind_Image,
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UIWidgetKind_Label,
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UIWidgetKind_Option,
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UIWidgetKind_Signal,
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UIWidgetKind_Group,
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};
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#define UI_SIGNAL_CALLBACK(name) void name()
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typedef UI_SIGNAL_CALLBACK(UISignalCallback);
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struct UISetup {
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UIWidgetKind kind;
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String text;
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union {
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void *v;
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Bitmap *image;
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B32 *b32;
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String *label;
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S32 *option;
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UISignalCallback *signal_callback;
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};
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S32 option_max;
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};
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#define UI_BOOL(text, x) {UIWidgetKind_Boolean,text,(void*)(x)}
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#define UI_IMAGE(x) {UIWidgetKind_Image,{},(void*)(x)}
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#define UI_LABEL(x) {UIWidgetKind_Label,{},(void*)(x)}
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#define UI_OPTION(text,x,option_max){UIWidgetKind_Option,text,(void*)(x),(option_max)}
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#define UI_SIGNAL(text,x){UIWidgetKind_Signal,text,(void*)(x)}
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struct UIWidget {
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UIWidgetKind kind;
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UIWidget *next;
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UIWidget *prev;
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UIWidget *first_child;
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UIWidget *last_child;
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String text;
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Vec2 size;
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S32 option_max;
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union {
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Bitmap *image;
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B32 *b32;
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String *label;
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S32 *option;
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UISignalCallback *signal_callback;
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} ptr;
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};
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struct UI : UIWidget {
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Arena arena;
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UIWidget *hot;
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UIWidget *active;
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};
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function UIWidget *ui_new_widget(Allocator *arena, UIWidgetKind kind) {
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UIWidget *result = exp_alloc_type(arena, UIWidget, AF_ZeroMemory);
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result->kind = kind;
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return result;
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}
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function void ui_push_child(UIWidget *widget, UIWidget *child) {
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DLLQueueAdd(widget->first_child, widget->last_child, child);
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}
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function UIWidget *ui_push_child(Arena *arena, UIWidget *widget, UIWidgetKind kind) {
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UIWidget *result = ui_new_widget(arena, kind);
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ui_push_child(widget, result);
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return result;
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}
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function UIWidget *ui_push_image(Arena *arena, UIWidget *widget, Bitmap *img) {
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UIWidget *result = ui_push_child(arena, widget, UIWidgetKind_Image);
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result->ptr.image = img;
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F32 ratio = (F32)result->ptr.image->x / (F32)result->ptr.image->y;
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result->size.y = 64;
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result->size.x = 64 * ratio;
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return result;
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}
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function UIWidget *ui_push_bool(Arena *arena, UIWidget *widget, String string, B32 *b32) {
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UIWidget *result = ui_push_child(arena, widget, UIWidgetKind_Boolean);
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result->text = string;
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result->ptr.b32 = b32;
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return result;
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}
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function UIWidget *ui_push_string(Arena *arena, UIWidget *widget, String *string) {
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UIWidget *result = ui_push_child(arena, widget, UIWidgetKind_Label);
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result->ptr.label = string;
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return result;
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}
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function UIWidget *ui_push_option(Arena *arena, UIWidget *widget, String string, S32 *option, S32 option_max) {
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UIWidget *result = ui_push_child(arena, widget, UIWidgetKind_Option);
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result->text = string;
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result->ptr.option = option;
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result->option_max = option_max;
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return result;
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}
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function UIWidget *ui_push_signal(Arena *arena, UIWidget *widget, String string, UISignalCallback *callback) {
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UIWidget *result = ui_push_child(arena, widget, UIWidgetKind_Signal);
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result->text = string;
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result->ptr.signal_callback = callback;
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return result;
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}
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function UI ui_make(UISetup *setup, U64 len) {
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UI result = {};
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arena_init(&result.arena, "UI_Arena"_s);
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UIWidget *parent = &result;
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for (UISetup *s = setup; s != (setup+len); s++) {
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switch (s->kind) {
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case UIWidgetKind_Image: {
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ui_push_image(&result.arena, parent, s->image);
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} break;
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case UIWidgetKind_Boolean: {
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ui_push_bool(&result.arena, parent, s->text, s->b32);
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} break;
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case UIWidgetKind_Label: {
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ui_push_string(&result.arena, parent, s->label);
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} break;
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case UIWidgetKind_Option: {
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ui_push_option(&result.arena, parent, s->text, s->option, s->option_max);
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} break;
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case UIWidgetKind_Signal: {
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ui_push_signal(&result.arena, parent, s->text, s->signal_callback);
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} break;
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invalid_default_case;
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}
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}
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return result;
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}
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function B32 ui_mouse_test(UI *ui, UIWidget *w, Vec4 rect) {
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B32 result = false;
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if (os.mouse_pos.x > rect.x && os.mouse_pos.x < rect.x + rect.width &&
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os.mouse_pos.y > rect.y && os.mouse_pos.y < rect.y + rect.height) {
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ui->hot = w;
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if (os.key[Key_MouseLeft].down) {
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ui->active = w;
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}
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}
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else if (w == ui->hot) {
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ui->hot = 0;
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}
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if (os.key[Key_MouseLeft].released) {
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if (ui->active == w) {
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if (ui->hot == w)
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result = true;
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ui->active = 0;
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}
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}
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return result;
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}
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function void ui_end_frame(Bitmap *dst, UI *ui, Font *font) {
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Scratch scratch;
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Vec2 pos = vec2(0, (F32)dst->y);
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for (UIWidget *w = ui->first_child; w; w = w->next) {
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Vec4 rect = {};
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switch (w->kind) {
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case UIWidgetKind_Image: {
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pos.y -= w->size.y;
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rect = vec4(pos, w->size);
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ui_mouse_test(ui, w, rect);
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String string = string_fmt(scratch, "%d %d", w->ptr.image->x, w->ptr.image->y);
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draw_string(dst, font, string, pos);
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draw_bitmap(dst, w->ptr.image, pos, w->size);
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if (ui->active == w) {
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F32 ratio = (F32)w->ptr.image->y / (F32)w->ptr.image->x;
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w->size.x -= os.delta_mouse_pos.x;
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w->size.y = w->size.x * ratio;
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}
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if (ui->hot == w) {
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draw_rect(dst, rect.x, rect.y, rect.width, rect.height, vec4(1, 1, 1, 0.1f));
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}
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} break;
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case UIWidgetKind_Boolean: {
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pos.y -= font->height;
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Vec4 color = vec4(0, 0, 0, 1);
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String string = string_fmt(scratch, "%s %d", w->text, *w->ptr.b32);
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rect = get_string_rect(font, string, pos);
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B32 clicked = ui_mouse_test(ui, w, rect);
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if (clicked) *w->ptr.b32 = !*w->ptr.b32;
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if (ui->hot == w) {
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color = vec4(0.4f, 0.4f, 0.4f, 1.f);
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}
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rect.y = rect.y-font->line_advance / 5;
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draw_rect(dst, rect.x, rect.y, rect.width, rect.height, color);
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rect = draw_string(dst, font, string, pos);
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pos.y -= rect.height - font->height;
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} break;
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case UIWidgetKind_Label: {
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pos.y -= font->height;
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rect = draw_string(dst, font, *w->ptr.label, pos);
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pos.y -= rect.height - font->height;
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} break;
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case UIWidgetKind_Option: {
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pos.y -= font->height;
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Vec4 color = vec4(0, 0, 0, 1);
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String string = string_fmt(scratch, "%Q %Q", w->text, *w->ptr.option);
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rect = get_string_rect(font, string, pos);
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B32 clicked = ui_mouse_test(ui, w, rect);
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if (clicked) {
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*w->ptr.b32 = (*w->ptr.b32+1) % w->option_max;
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}
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if (ui->hot == w) {
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color = vec4(0.4f, 0.4f, 0.4f, 1.f);
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}
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rect.y = rect.y-font->line_advance / 5;
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draw_rect(dst, rect.x, rect.y, rect.width, rect.height, color);
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rect = draw_string(dst, font, string, pos);
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pos.y -= rect.height - font->height;
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} break;
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case UIWidgetKind_Signal: {
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pos.y -= font->height;
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Vec4 color = vec4(0, 0, 0, 1);
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String string = string_fmt(scratch, "%Q", w->text);
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rect = get_string_rect(font, string, pos);
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B32 clicked = ui_mouse_test(ui, w, rect);
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if (clicked) {
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w->ptr.signal_callback();
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}
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if (ui->hot == w) {
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color = vec4(0.4f, 0.4f, 0.4f, 1.f);
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}
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rect.y = rect.y-font->line_advance / 5;
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draw_rect(dst, rect.x, rect.y, rect.width, rect.height, color);
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rect = draw_string(dst, font, string, pos);
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pos.y -= rect.height - font->height;
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} break;
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invalid_default_case;
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}
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}
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}
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