Plan canvas toolbar bindings

src/app_core/canvas_tool_ui.h

@@ -2,7 +2,9 @@
 
 #include "foundation/result.h"
 
+#include <array>
 #include <cmath>
+#include <string_view>
 
 namespace pp::app {
 
@@ -32,6 +34,12 @@ enum class CanvasToolTransformAction {
     cut,
 };
 
+enum class CanvasToolToolbarAction {
+    select_mode,
+    toggle_picking,
+    toggle_touch_lock,
+};
+
 enum class CanvasCursorVisibilityMode {
     never,
     small_brush,
@@ -68,6 +76,19 @@ struct CanvasToolButtonState {
     bool flood_fill_active = false;
 };
 
+struct CanvasToolToolbarBinding {
+    std::string_view button_id;
+    CanvasToolToolbarAction action = CanvasToolToolbarAction::select_mode;
+    CanvasToolMode mode = CanvasToolMode::draw;
+    bool custom_button = true;
+    bool applies_default_on_init = false;
+};
+
+struct CanvasToolToolbarPlan {
+    std::array<CanvasToolToolbarBinding, 13> bindings {};
+    CanvasToolMode default_mode = CanvasToolMode::draw;
+};
+
 struct CanvasCursorVisibilityInput {
     CanvasToolMode mode = CanvasToolMode::draw;
     CanvasCursorVisibilityMode visibility_mode = CanvasCursorVisibilityMode::never;
@@ -139,6 +160,44 @@ public:
     return plan;
 }
 
+[[nodiscard]] inline constexpr CanvasToolToolbarPlan plan_canvas_tool_toolbar() noexcept
+{
+    return {
+        std::array<CanvasToolToolbarBinding, 13> {
+            CanvasToolToolbarBinding { "btn-pen", CanvasToolToolbarAction::select_mode, CanvasToolMode::draw, true, true },
+            CanvasToolToolbarBinding { "btn-pick", CanvasToolToolbarAction::toggle_picking, CanvasToolMode::draw, true, false },
+            CanvasToolToolbarBinding { "btn-touchlock", CanvasToolToolbarAction::toggle_touch_lock, CanvasToolMode::draw, true, false },
+            CanvasToolToolbarBinding { "btn-erase", CanvasToolToolbarAction::select_mode, CanvasToolMode::erase, true, false },
+            CanvasToolToolbarBinding { "btn-line", CanvasToolToolbarAction::select_mode, CanvasToolMode::line, true, false },
+            CanvasToolToolbarBinding { "btn-cam", CanvasToolToolbarAction::select_mode, CanvasToolMode::camera, false, false },
+            CanvasToolToolbarBinding { "btn-grid", CanvasToolToolbarAction::select_mode, CanvasToolMode::grid, false, false },
+            CanvasToolToolbarBinding { "btn-copy", CanvasToolToolbarAction::select_mode, CanvasToolMode::copy, false, false },
+            CanvasToolToolbarBinding { "btn-cut", CanvasToolToolbarAction::select_mode, CanvasToolMode::cut, false, false },
+            CanvasToolToolbarBinding { "btn-fill", CanvasToolToolbarAction::select_mode, CanvasToolMode::fill, false, false },
+            CanvasToolToolbarBinding { "btn-mask-free", CanvasToolToolbarAction::select_mode, CanvasToolMode::mask_free, true, false },
+            CanvasToolToolbarBinding { "btn-mask-line", CanvasToolToolbarAction::select_mode, CanvasToolMode::mask_line, true, false },
+            CanvasToolToolbarBinding { "btn-bucket", CanvasToolToolbarAction::select_mode, CanvasToolMode::flood_fill, true, false },
+        },
+        CanvasToolMode::draw,
+    };
+}
+
+[[nodiscard]] inline constexpr CanvasToolPlan plan_canvas_tool_toolbar_binding_action(
+    const CanvasToolToolbarBinding& binding,
+    bool current_mode_is_draw) noexcept
+{
+    switch (binding.action) {
+    case CanvasToolToolbarAction::select_mode:
+        return plan_canvas_tool_select(binding.mode);
+    case CanvasToolToolbarAction::toggle_picking:
+        return plan_canvas_tool_pick_toggle(current_mode_is_draw);
+    case CanvasToolToolbarAction::toggle_touch_lock:
+        return plan_canvas_tool_touch_lock_toggle();
+    }
+
+    return plan_canvas_tool_select(CanvasToolMode::draw);
+}
+
 [[nodiscard]] inline constexpr CanvasToolButtonState plan_canvas_tool_button_state(
     CanvasToolMode mode,
     bool picking,