diff options
Diffstat (limited to 'src/ui/layout_base.h')
| -rw-r--r-- | src/ui/layout_base.h | 301 |
1 files changed, 149 insertions, 152 deletions
diff --git a/src/ui/layout_base.h b/src/ui/layout_base.h index 4a4c09ea..b3001268 100644 --- a/src/ui/layout_base.h +++ b/src/ui/layout_base.h @@ -5,187 +5,184 @@ #include "base.h" #include "ui_base.h" -namespace cru +namespace cru::ui { - namespace ui + class Control; + class Window; + + enum class Alignment { - class Control; - class Window; + Center, + Start, + End + }; - enum class Alignment - { - Center, - Start, - End - }; + enum class MeasureMode + { + Exactly, + Content, + Stretch + }; - enum class MeasureMode + enum class RectRange + { + Content, // content excluding padding, border and margin + Padding, // only including content and padding + HalfBorder, // including content, padding and half border + FullBorder, // including content, padding and full border + Margin // including content, padding, border and margin + }; + + struct Thickness + { + constexpr static Thickness Zero() { - Exactly, - Content, - Stretch - }; + return Thickness(0); + } + + constexpr Thickness() : Thickness(0) { } - enum class RectRange + constexpr explicit Thickness(const float width) + : left(width), top(width), right(width), bottom(width) { } + + constexpr explicit Thickness(const float horizontal, const float vertical) + : left(horizontal), top(vertical), right(horizontal), bottom(vertical) { } + + constexpr Thickness(const float left, const float top, const float right, const float bottom) + : left(left), top(top), right(right), bottom(bottom) { } + + float GetHorizontalTotal() const { - Content, // content excluding padding, border and margin - Padding, // only including content and padding - HalfBorder, // including content, padding and half border - FullBorder, // including content, padding and full border - Margin // including content, padding, border and margin - }; - - struct Thickness + return left + right; + } + + float GetVerticalTotal() const { - constexpr static Thickness Zero() - { - return Thickness(0); - } + return top + bottom; + } - constexpr Thickness() : Thickness(0) { } + float Validate() const + { + return left >= 0.0 && top >= 0.0 && right >= 0.0 && bottom >= 0.0; + } - constexpr explicit Thickness(const float width) - : left(width), top(width), right(width), bottom(width) { } + float left; + float top; + float right; + float bottom; + }; - constexpr explicit Thickness(const float horizontal, const float vertical) - : left(horizontal), top(vertical), right(horizontal), bottom(vertical) { } + struct LayoutSideParams final + { + constexpr static LayoutSideParams Exactly(const float length, const Alignment alignment = Alignment::Center) + { + return LayoutSideParams(MeasureMode::Exactly, length, alignment); + } - constexpr Thickness(const float left, const float top, const float right, const float bottom) - : left(left), top(top), right(right), bottom(bottom) { } + constexpr static LayoutSideParams Content(const Alignment alignment = Alignment::Center) + { + return LayoutSideParams(MeasureMode::Content, 0, alignment); + } - float GetHorizontalTotal() const - { - return left + right; - } + constexpr static LayoutSideParams Stretch(const Alignment alignment = Alignment::Center) + { + return LayoutSideParams(MeasureMode::Stretch, 0, alignment); + } - float GetVerticalTotal() const - { - return top + bottom; - } + constexpr LayoutSideParams() = default; - float Validate() const - { - return left >= 0.0 && top >= 0.0 && right >= 0.0 && bottom >= 0.0; - } + constexpr explicit LayoutSideParams(const MeasureMode mode, const float length, const Alignment alignment) + : length(length), mode(mode), alignment(alignment) + { - float left; - float top; - float right; - float bottom; - }; + } - struct LayoutSideParams final - { - constexpr static LayoutSideParams Exactly(const float length, const Alignment alignment = Alignment::Center) - { - return LayoutSideParams(MeasureMode::Exactly, length, alignment); - } - - constexpr static LayoutSideParams Content(const Alignment alignment = Alignment::Center) - { - return LayoutSideParams(MeasureMode::Content, 0, alignment); - } - - constexpr static LayoutSideParams Stretch(const Alignment alignment = Alignment::Center) - { - return LayoutSideParams(MeasureMode::Stretch, 0, alignment); - } - - constexpr LayoutSideParams() = default; - - constexpr explicit LayoutSideParams(const MeasureMode mode, const float length, const Alignment alignment) - : length(length), mode(mode), alignment(alignment) - { - - } - - constexpr bool Validate() const - { - if (length < 0.0) - return false; - if (min.has_value() && min.value() < 0.0) - return false; - if (max.has_value() && max.value() < 0.0) - return false; - if (min.has_value() && max.has_value() && min.value() > max.value()) - return false; - return true; - } - - // only used in exactly mode, specify the exactly side length of content. - float length = 0.0; - MeasureMode mode = MeasureMode::Content; - Alignment alignment = Alignment::Center; - - // min and max specify the min/max side length of content. - // they are used as hint and respect the actual size that content needs. - // when mode is exactly, length is coerced into the min-max range. - std::optional<float> min = std::nullopt; - std::optional<float> max = std::nullopt; - }; - - struct BasicLayoutParams final + constexpr bool Validate() const { - BasicLayoutParams() = default; - BasicLayoutParams(const BasicLayoutParams&) = default; - BasicLayoutParams(BasicLayoutParams&&) = default; - BasicLayoutParams& operator = (const BasicLayoutParams&) = default; - BasicLayoutParams& operator = (BasicLayoutParams&&) = default; - ~BasicLayoutParams() = default; - - bool Validate() const - { - return width.Validate() && height.Validate() && margin.Validate() && padding.Validate(); - } - - LayoutSideParams width; - LayoutSideParams height; - Thickness padding; - Thickness margin; - }; - - - class LayoutManager : public Object + if (length < 0.0) + return false; + if (min.has_value() && min.value() < 0.0) + return false; + if (max.has_value() && max.value() < 0.0) + return false; + if (min.has_value() && max.has_value() && min.value() > max.value()) + return false; + return true; + } + + // only used in exactly mode, specify the exactly side length of content. + float length = 0.0; + MeasureMode mode = MeasureMode::Content; + Alignment alignment = Alignment::Center; + + // min and max specify the min/max side length of content. + // they are used as hint and respect the actual size that content needs. + // when mode is exactly, length is coerced into the min-max range. + std::optional<float> min = std::nullopt; + std::optional<float> max = std::nullopt; + }; + + struct BasicLayoutParams final + { + BasicLayoutParams() = default; + BasicLayoutParams(const BasicLayoutParams&) = default; + BasicLayoutParams(BasicLayoutParams&&) = default; + BasicLayoutParams& operator = (const BasicLayoutParams&) = default; + BasicLayoutParams& operator = (BasicLayoutParams&&) = default; + ~BasicLayoutParams() = default; + + bool Validate() const { - public: - static LayoutManager* GetInstance(); + return width.Validate() && height.Validate() && margin.Validate() && padding.Validate(); + } + + LayoutSideParams width; + LayoutSideParams height; + Thickness padding; + Thickness margin; + }; + + + class LayoutManager : public Object + { + public: + static LayoutManager* GetInstance(); - public: - LayoutManager() = default; - LayoutManager(const LayoutManager& other) = delete; - LayoutManager(LayoutManager&& other) = delete; - LayoutManager& operator=(const LayoutManager& other) = delete; - LayoutManager& operator=(LayoutManager&& other) = delete; - ~LayoutManager() override = default; + public: + LayoutManager() = default; + LayoutManager(const LayoutManager& other) = delete; + LayoutManager(LayoutManager&& other) = delete; + LayoutManager& operator=(const LayoutManager& other) = delete; + LayoutManager& operator=(LayoutManager&& other) = delete; + ~LayoutManager() override = default; - //*************** region: position cache *************** + //*************** region: position cache *************** - //Mark position cache of the control and its descendants invalid, - //(which is saved as an auto-managed list internal) - //and send a message to refresh them. - void InvalidateControlPositionCache(Control* control); + //Mark position cache of the control and its descendants invalid, + //(which is saved as an auto-managed list internal) + //and send a message to refresh them. + void InvalidateControlPositionCache(Control* control); - //Refresh position cache of the control and its descendants whose cache - //has been marked as invalid. - void RefreshInvalidControlPositionCache(); + //Refresh position cache of the control and its descendants whose cache + //has been marked as invalid. + void RefreshInvalidControlPositionCache(); - //Refresh position cache of the control and its descendants immediately. - static void RefreshControlPositionCache(Control* control); + //Refresh position cache of the control and its descendants immediately. + static void RefreshControlPositionCache(Control* control); - //*************** region: layout *************** + //*************** region: layout *************** - void InvalidateWindowLayout(Window* window); + void InvalidateWindowLayout(Window* window); - void RefreshInvalidWindowLayout(); + void RefreshInvalidWindowLayout(); - private: - static void RefreshControlPositionCacheInternal(Control* control, const Point& parent_lefttop_absolute); + private: + static void RefreshControlPositionCacheInternal(Control* control, const Point& parent_lefttop_absolute); - private: - std::unordered_set<Control*> cache_invalid_controls_; - std::unordered_set<Window*> layout_invalid_windows_; - }; - } + private: + std::unordered_set<Control*> cache_invalid_controls_; + std::unordered_set<Window*> layout_invalid_windows_; + }; } |