PixelPaint: Show Guides on GuideTool activation

This adds on_tool_activation() to Tool which GuideTool can use
to show guides, if they're hidden, when it's activated. Also
show guides on mousedown since there's no use in drawing invisible
guides.

1 files changed, 14 insertions, 0 deletions

diff --git a/Userland/Applications/PixelPaint/ImageEditor.cpp b/Userland/Applications/PixelPaint/ImageEditor.cpp
index f180b5e110..248f37a611 100644
--- a/Userland/Applications/PixelPaint/ImageEditor.cpp
+++ b/Userland/Applications/PixelPaint/ImageEditor.cpp
@@ -316,10 +316,24 @@ void ImageEditor::set_active_tool(Tool* tool)
 
     if (m_active_tool) {
         m_active_tool->setup(*this);
+        m_active_tool->on_tool_activation();
         m_active_cursor = m_active_tool->cursor();
     }
 }
 
+void ImageEditor::set_guide_visibility(bool show_guides)
+{
+    if (m_show_guides == show_guides)
+        return;
+
+    m_show_guides = show_guides;
+
+    if (on_set_guide_visibility)
+        on_set_guide_visibility(m_show_guides);
+
+    update();
+}
+
 void ImageEditor::layers_did_change()
 {
     update();