Add Clean Layer command

Author: MrOneTwo

src/bindings.cc

@@ -64,6 +64,7 @@ set_default_bindings(MiltonBindings* bs)
    binding(bs, Modifier_CTRL, 'n', Action_NEW);
    binding(bs, Modifier_CTRL, 'o', Action_OPEN);
    binding(bs, (ModifierFlags)(Modifier_CTRL | Modifier_SHIFT), 's', Action_SAVE_AS);
+   binding(bs, Modifier_CTRL, 'c', Action_WIPE_LAYER);
 
    binding(bs, Modifier_NONE, 'm', Action_TOGGLE_MENU);
    binding(bs, Modifier_NONE, 'e', Action_MODE_ERASER);
@@ -252,6 +253,9 @@ binding_dispatch_action(BindableAction a, MiltonInput* input, Milton* milton, v2
       case ActionRelease_PEEK_OUT: {
           peek_out_trigger_stop(milton);
       } break;
+      case Action_WIPE_LAYER: {
+          milton_wipe_layer(milton);
+      } break;
    #if MILTON_DEBUG
       case Action_TOGGLE_DEBUG_WINDOW: {
          milton->viz_window_visible = !milton->viz_window_visible;

src/bindings.h

@@ -39,6 +39,7 @@ enum BindableAction
    Action_SET_BRUSH_ALPHA_100,
    Action_HELP,
    Action_PEEK_OUT,
+   Action_WIPE_LAYER,
 
    #if MILTON_ENABLE_PROFILING
       // Debug bindings

src/canvas.cc

@@ -108,6 +108,7 @@ namespace layer
         }
         return layer;
     }
+
     Layer*
     get_by_id(Layer* root_layer, i32 id)
     {
@@ -141,6 +142,12 @@ namespace layer
         return result;
     }
 
+    void
+    layer_wipe(Layer* layer)
+    {
+        StrokeList* strokes = &(layer->strokes);
+        reset(strokes);
+    }
 
     void
     layer_toggle_visibility(Layer* layer)

src/canvas.h

@@ -105,6 +105,7 @@ namespace layer {
     void    layer_toggle_visibility (Layer* layer);
     b32     layer_has_blur_effect (Layer* layer);
     Stroke* layer_push_stroke (Layer* layer, Stroke stroke);
+    void    layer_wipe(Layer* layer);
     i32     number_of_layers (Layer* root);
     void    free_layers (Layer* root);
     i64     count_strokes (Layer* root);

src/gui.cc

@@ -25,10 +25,12 @@ gui_layer_window(MiltonInput* input, PlatformState* platform, Milton* milton, f3
 
     // Layer window
     ImGui::SetNextWindowPos(ImVec2(ui_scale*10, ui_scale*20 + (float)pbounds.bottom + brush_window_height ), ImGuiSetCond_FirstUseEver);
-    ImGui::SetNextWindowSize(ImVec2(ui_scale*300, ui_scale*220), ImGuiSetCond_FirstUseEver);
+    ImGui::SetNextWindowSize(ImVec2(ui_scale*400, ui_scale*220), ImGuiSetCond_FirstUseEver);
+
     if ( ImGui::Begin(loc(TXT_layers)) ) {
         CanvasView* view = milton->view;
-        // left
+
+        // Layers window.
         ImGui::BeginChild("left pane", ImVec2(150, 0), true);
 
         Layer* layer = milton->canvas->root_layer;
@@ -48,16 +50,22 @@ gui_layer_window(MiltonInput* input, PlatformState* platform, Milton* milton, f3
             layer = layer->prev;
         }
         ImGui::EndChild();
+
         ImGui::SameLine();
 
         ImGui::BeginGroup();
         ImGui::BeginChild("item view", ImVec2(0, 25));
+        // New layer button.
         if ( ImGui::Button(loc(TXT_new_layer)) ) {
             milton_new_layer(milton);
         }
         ImGui::SameLine();
-
-        // Layer effects
+        // Wipe layer.
+        if ( ImGui::Button(loc(TXT_wipe_layer)) ) {
+            milton_wipe_layer(milton);
+        }
+        ImGui::SameLine();
+        // Layer effects button.
         if ( canvas ) {
             Layer* working_layer = canvas->working_layer;
             Arena* canvas_arena = &canvas->arena;
@@ -141,8 +149,8 @@ gui_layer_window(MiltonInput* input, PlatformState* platform, Milton* milton, f3
             }
         }
 
-        ImGui::Separator();
         ImGui::EndChild();
+        ImGui::Separator();
         ImGui::BeginChild("buttons");
 
         static b32 is_renaming = false;

src/localization.cc

@@ -59,6 +59,7 @@ init_localization()
         EN(TXT_toggle_gui_visibility, "Toggle GUI Visibility");
         EN(TXT_layers, "Layers");
         EN(TXT_new_layer, "New Layer");
+        EN(TXT_wipe_layer, "Clean layer");
         EN(TXT_rename, "Rename");
         EN(TXT_move, "Move");
         EN(TXT_move_canvas, "Move canvas");

src/localization.h

@@ -44,6 +44,7 @@ enum Texts
     TXT_switch_to_primitive,
     TXT_help_me,
     TXT_new_layer,
+    TXT_wipe_layer,
     TXT_rename,
     TXT_move,
     TXT_move_canvas,
@@ -115,6 +116,7 @@ enum Texts
     TXT_Action_SET_BRUSH_ALPHA_100,
     TXT_Action_HELP,
     TXT_Action_PEEK_OUT,
+    TXT_Action_WIPE_LAYER,
 
 #if MILTON_ENABLE_PROFILING
     TXT_Action_TOGGLE_DEBUG_WINDOW,

src/milton.cc

@@ -861,6 +861,11 @@ milton_set_working_layer(Milton* milton, Layer* layer)
     milton->view->working_layer_id = layer->id;
 }
 
+void milton_wipe_layer(Milton* milton)
+{
+    layer::layer_wipe(milton->canvas->working_layer);
+}
+
 void
 milton_delete_working_layer(Milton* milton)
 {

src/milton.h

@@ -294,6 +294,7 @@ void milton_new_layer_with_id(Milton* milton, i32 new_id);
 void milton_set_working_layer(Milton* milton, Layer* layer);
 void milton_delete_working_layer(Milton* milton);
 void milton_set_background_color(Milton* milton, v3f background_color);
+void milton_wipe_layer(Milton* milton);
 
 // Set the center of the zoom
 void milton_set_zoom_at_point(Milton* milton, v2i zoom_center);