vn/code/gen_ui.cpp

struct ui_style_stack
{
    char *Name;
    char *Type;
    char *MemberName;
};

ui_style_stack UIStyleStacks[] =
{
    { "Parent",             "ui_box *",     "Parent"                },
    { "Width",              "ui_size",      "SemanticSize[Axis2_X]" },
    { "Height",             "ui_size",      "SemanticSize[Axis2_Y]" },
    { "FixedX",             "r32",          "FixedP.E[Axis2_X]"     },
    { "FixedY",             "r32",          "FixedP.E[Axis2_Y]"     },
    { "TextColor",          "v4",           "TextColor"             },
    { "BackgroundColor",    "v4",           "BackgroundColor"       },
    { "BorderColor",        "v4",           "BorderColor"           },
    { "BorderThickness",    "r32",          "BorderThickness"       },
    { "LayoutAxis",         "axis2",        "LayoutAxis"            },
    { "CornerRadius",       "r32",          "CornerRadius"          },
    { "Font",               "font_id",      "Font"                  },
    { "FontSize",           "r32",          "FontSize"              },
    { "OffsetX",            "r32",          "Offset.x"              },
    { "OffsetY",            "r32",          "Offset.y"              },
};

static void GenUI(void)
{
    FILE *Out = fopen("../code/generated/vn_generated_ui.h", "wb");
    if(Out)
    {
        fprintf(Out, "struct ui_style_stacks\n");
        fprintf(Out, "{\n");
        for(s32 Index = 0;
            Index < ArrayCount(UIStyleStacks);
            ++Index)
        {
            ui_style_stack Stack = UIStyleStacks[Index];
            fprintf(Out, "\t%s %sStack[64];\n", Stack.Type, Stack.Name);
            fprintf(Out, "\ts32 %sStackUsed;\n", Stack.Name);
            fprintf(Out, "\tb32 AutoPop%s;\n", Stack.Name);
        }
        fprintf(Out, "};\n");
        fclose(Out);
    }
    
    Out = fopen("../code/generated/vn_generated_ui.cpp", "wb");
    if(Out)
    {
        for(s32 Index = 0;
            Index < ArrayCount(UIStyleStacks);
            ++Index)
        {
            ui_style_stack Stack = UIStyleStacks[Index];
            fprintf(Out, "inline void UI_Push%s(%s Element)\n", Stack.Name, Stack.Type);
            fprintf(Out, "{\n");
            fprintf(Out, "\tui *UI = UI_GetState();\n");
            fprintf(Out, "\tAssert(UI->Stacks.%sStackUsed + 1 < ArrayCount(UI->Stacks.%sStack));\n", Stack.Name, Stack.Name);
            fprintf(Out, "\tUI->Stacks.%sStack[UI->Stacks.%sStackUsed++] = Element;\n", Stack.Name, Stack.Name);
            fprintf(Out, "}\n");
            
            fprintf(Out, "\n");
            
            fprintf(Out, "inline void UI_Pop%s(void)\n", Stack.Name);
            fprintf(Out, "{\n");
            fprintf(Out, "\tui *UI = UI_GetState();\n");
            fprintf(Out, "\tAssert(UI->Stacks.%sStackUsed > 0);\n", Stack.Name);
            fprintf(Out, "\t--UI->Stacks.%sStackUsed;\n", Stack.Name);
            fprintf(Out, "}\n");
            
            fprintf(Out, "\n");
            
            fprintf(Out, "inline void UI_SetNext%s(%s Element)\n", Stack.Name, Stack.Type);
            fprintf(Out, "{\n");
            fprintf(Out, "\tui *UI = UI_GetState();\n");
            fprintf(Out, "\tUI_Push%s(Element);\n", Stack.Name);
            fprintf(Out, "\tUI->Stacks.AutoPop%s = true;\n", Stack.Name);
            fprintf(Out, "}\n");
            
            fprintf(Out, "\n");
            
            fprintf(Out, "inline %s UI_First%s(void)\n", Stack.Type, Stack.Name);
            fprintf(Out, "{\n");
            fprintf(Out, "\tui *UI = UI_GetState();\n");
            fprintf(Out, "\treturn(UI->Stacks.%sStack[0]);\n", Stack.Name);
            fprintf(Out, "}\n");
            
            fprintf(Out, "\n");
            
            fprintf(Out, "inline %s UI_Top%s(void)\n", Stack.Type, Stack.Name);
            fprintf(Out, "{\n");
            fprintf(Out, "\tui *UI = UI_GetState();\n");
            fprintf(Out, "\treturn(UI->Stacks.%sStack[UI->Stacks.%sStackUsed - 1]);\n", Stack.Name, Stack.Name);
            fprintf(Out, "}\n");
            
            fprintf(Out, "\n");
            
            fprintf(Out, "#define UI_%s(Element) DeferLoop(UI_Push%s(Element), UI_Pop%s())\n",
                    Stack.Name, Stack.Name, Stack.Name);
            
            fprintf(Out, "\n");
        }
        
        fprintf(Out, "\n");
        
        fprintf(Out, "inline void UI_ApplyStyles(ui_box *Box)\n");
        fprintf(Out, "{\n");
        fprintf(Out, "\tui *UI = UI_GetState();\n");
        for(s32 Index = 0;
            Index < ArrayCount(UIStyleStacks);
            ++Index)
        {
            ui_style_stack Stack = UIStyleStacks[Index];
            fprintf(Out, "\tAssert(UI->Stacks.%sStackUsed > 0);\n", Stack.Name);
            fprintf(Out, "\tBox->%s = UI->Stacks.%sStack[UI->Stacks.%sStackUsed - 1];\n",
                    Stack.MemberName, Stack.Name, Stack.Name);
            fprintf(Out, "\tif(UI->Stacks.AutoPop%s)\n", Stack.Name);
            fprintf(Out, "\t{\n");
            fprintf(Out, "\t\tUI_Pop%s();\n", Stack.Name);
            fprintf(Out, "\t\tUI->Stacks.AutoPop%s = false;\n", Stack.Name);
            fprintf(Out, "\t}\n\n");
        }
        
        fprintf(Out, "}\n");
        
        
        fclose(Out);
    }
}