add message box prompts

code/game/source/editors/texed.c

@@ -80,11 +80,20 @@ typedef struct {
 
 #define OP(n) .kind = n, .name = #n 
 
+typedef struct {
+    bool visible;
+    char const *title;
+    char const *message;
+    char const *buttons;
+    int result;
+} td_msgbox;
+
 typedef struct {
     char *filepath;
     Image img;
     Texture2D tex;
     GuiFileDialogState fileDialog;
+    td_msgbox msgbox;
     bool is_saved;
     
     td_op *ops; //< zpl_array
@@ -105,6 +114,7 @@ void texed_export_cc(char const *path);
 void texed_export_png(char const *path);
 void texed_repaint_preview(void);
 void texed_compose_image(void);
+void texed_msgbox_init(char const *title, char const *message, char const *buttons);
 void texed_process_ops(void);
 void texed_process_params(void);
 void texed_add_op(int idx);
@@ -114,6 +124,7 @@ void texed_swp_op(int idx, int idx2);
 void texed_draw_oplist_pane(zpl_aabb2 r);
 void texed_draw_props_pane(zpl_aabb2 r);
 void texed_draw_topbar(zpl_aabb2 r);
+void texed_draw_msgbox(zpl_aabb2 r);
 
 static inline
 void DrawAABB(zpl_aabb2 rect, Color color) {
@@ -213,6 +224,7 @@ void texed_run(int argc, char **argv) {
             .min = (zpl_vec2) {.x = 0.0f, .y = 0.0f},
             .max = (zpl_vec2) {.x = GetScreenWidth(), .y = GetScreenHeight()},
         };
+        zpl_aabb2 orig_screen = screen;
         
         zpl_aabb2 topbar = zpl_aabb2_cut_top(&screen, 25.0f);
         zpl_aabb2 oplist_pane = zpl_aabb2_cut_right(&screen, screenWidth / 2.0f);
@@ -239,6 +251,8 @@ void texed_run(int argc, char **argv) {
         ClearBackground(GetColor(0x222034));
         {
             if (ctx.fileDialog.fileDialogActive) GuiLock();
+            if (ctx.msgbox.visible) GuiLock();
+            
             DrawTextureEx(checker_tex, (Vector2){ preview_window.min.x, preview_window.min.y}, 0.0f, 1.0f, WHITE);
             DrawTextureEx(ctx.tex, (Vector2){ preview_window.min.x, preview_window.min.y}, 0.0f, zoom, WHITE);
             
@@ -251,7 +265,10 @@ void texed_run(int argc, char **argv) {
             texed_draw_oplist_pane(oplist_pane);
             
             if (ctx.fileDialog.fileDialogActive) GuiUnlock();
+            if (ctx.msgbox.visible) GuiUnlock();
+            
             GuiFileDialog(&ctx.fileDialog);
+            texed_draw_msgbox(orig_screen);
         }
         EndDrawing();
     }
@@ -310,6 +327,14 @@ void texed_compose_image(void) {
     texed_process_ops();
 }
 
+void texed_msgbox_init(char const *title, char const *message, char const *buttons) {
+    ctx.msgbox.result = -1;
+    ctx.msgbox.visible = true;
+    ctx.msgbox.title = title;
+    ctx.msgbox.message = message;
+    ctx.msgbox.buttons = buttons;
+}
+
 void texed_add_op(int idx) {
     assert(idx >= 0 && idx < DEF_OPS_LEN);
     td_op *dop = &default_ops[idx];

code/game/source/editors/texed_widgets.c

@@ -15,10 +15,24 @@ void texed_draw_topbar(zpl_aabb2 r) {
     zpl_aabb2_cut_left(&r, 100.0f);
     
     zpl_aabb2 new_prj_r = zpl_aabb2_cut_left(&r, 60.0f);
+    static bool new_pending = false;
     
     if (GuiButton(aabb2_ray(new_prj_r), "NEW")) {
-        texed_destroy();
-        texed_new(TD_DEFAULT_IMG_WIDTH, TD_DEFAULT_IMG_HEIGHT);
+        if (ctx.is_saved) {
+            texed_destroy();
+            texed_new(TD_DEFAULT_IMG_WIDTH, TD_DEFAULT_IMG_HEIGHT);
+        } else {
+            new_pending = true;
+            texed_msgbox_init("Discard unsaved work?", "You have an unsaved work! Do you want to proceed?", "Cancel;OK");
+        }
+    }
+    
+    if (new_pending && ctx.msgbox.result != -1) {
+        new_pending = false;
+        if (ctx.msgbox.result == 2) {
+            texed_destroy();
+            texed_new(TD_DEFAULT_IMG_WIDTH, TD_DEFAULT_IMG_HEIGHT);
+        }
     }
     
     zpl_aabb2 load_prj_r = zpl_aabb2_cut_left(&r, 60.0f);
@@ -26,7 +40,11 @@ void texed_draw_topbar(zpl_aabb2 r) {
     
     if (GuiButton(aabb2_ray(load_prj_r), "LOAD")) {
         load_pending = true;
-        ctx.fileDialog.fileDialogActive = true;
+        if (ctx.is_saved) {
+            ctx.fileDialog.fileDialogActive = true;
+        } else {
+            texed_msgbox_init("Discard unsaved work?", "You have an unsaved work! Do you want to proceed?", "Cancel;OK");
+        }
     }
     
     if (ctx.fileDialog.SelectFilePressed && load_pending) {
@@ -41,6 +59,14 @@ void texed_draw_topbar(zpl_aabb2 r) {
         }
     }
     
+    if (load_pending && ctx.msgbox.result != -1) {
+        if (ctx.msgbox.result == 2) {
+            ctx.msgbox.result = -1; // NOTE(zaklaus): ensure we don't re-trigger this branch next frame
+            ctx.fileDialog.fileDialogActive = true;
+        }
+        else load_pending = false;
+    }
+    
     zpl_aabb2 save_prj_r = zpl_aabb2_cut_left(&r, 60.0f);
     static bool save_as_pending = false;
     
@@ -421,3 +447,23 @@ int GuiDropdownBoxEco(Rectangle bounds, char const *text, char const *caption, i
     *active = itemSelected;
     return pressed;
 }
+
+#define TD_UI_MSGBOX_WIDTH 320
+#define TD_UI_MSGBOX_HEIGHT 200
+
+void texed_draw_msgbox(zpl_aabb2 r) {
+    if (!ctx.msgbox.visible) return;
+    DrawRectangle(r.min.x, r.min.y, r.max.x, r.max.y, Fade(GetColor(GuiGetStyle(DEFAULT, BACKGROUND_COLOR)), 0.85f));
+    
+    Rectangle rec = {
+        r.max.x/2.0f - TD_UI_MSGBOX_WIDTH/2.0f,
+        r.max.y/2.0f - TD_UI_MSGBOX_HEIGHT/2.0f,
+        TD_UI_MSGBOX_WIDTH,
+        TD_UI_MSGBOX_HEIGHT,
+    };
+    
+    ctx.msgbox.result = GuiMessageBox(rec, ctx.msgbox.title, ctx.msgbox.message, ctx.msgbox.buttons);
+    if (ctx.msgbox.result != -1) {
+        ctx.msgbox.visible = false;
+    }
+}