From a48ff30f9d4ac8ae6cc9adef4a07f8d9beb69e7a Mon Sep 17 00:00:00 2001 From: crupest Date: Thu, 25 Jun 2020 23:44:43 +0800 Subject: Write layout logic at half way. --- include/cru/ui/render/CanvasRenderObject.hpp | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'include/cru/ui/render/CanvasRenderObject.hpp') diff --git a/include/cru/ui/render/CanvasRenderObject.hpp b/include/cru/ui/render/CanvasRenderObject.hpp index 402302cb..323b4800 100644 --- a/include/cru/ui/render/CanvasRenderObject.hpp +++ b/include/cru/ui/render/CanvasRenderObject.hpp @@ -2,9 +2,9 @@ #include "RenderObject.hpp" namespace cru::ui::render { -// The measure logic for `CanvasRenderObject` is that you set a desired size by -// `SetDesiredSize` (not `SetPreferredSize`) and it will compare desired size -// and available size and use the smaller one (by `Min`). +// Layout logic: +// If no preferred size is set. Then (100, 100) is used and then coerced to +// required range. class CanvasRenderObject : public RenderObject { public: CanvasRenderObject(); @@ -21,14 +21,11 @@ class CanvasRenderObject : public RenderObject { Size GetDesiredSize() const { return desired_size_; } - // Set the desired size. This is the content size excluding padding and - // margin. - void SetDesiredSize(const Size& new_size) { desired_size_ = new_size; } - IEvent* PaintEvent() { return &paint_event_; } protected: - Size OnMeasureContent(const MeasureRequirement& requirement) override; + Size OnMeasureContent(const MeasureRequirement& requirement, + const MeasureSize& preferred_size) override; void OnLayoutContent(const Rect& content_rect) override; private: -- cgit v1.2.3