Merge branch 'issue4-dev' into 'master'

Resolve "Abstract out the common part of TextBlock and TextBox."

Closes #4

See merge request crupest/CruUI!3

1 files changed, 1 insertions, 266 deletions

diff --git a/src/ui/controls/text_block.cpp b/src/ui/controls/text_block.cpp
index 93d66ba6..ecffb69e 100644
--- a/src/ui/controls/text_block.cpp
+++ b/src/ui/controls/text_block.cpp
@@ -1,8 +1,6 @@
 #include "text_block.h"
 
 #include "ui/window.h"
-#include "graph/graph.h"
-#include "exception.h"
 
 namespace cru
 {
@@ -10,273 +8,10 @@ namespace cru
     {
         namespace controls
         {
-            using graph::CreateSolidBrush;
-
-            inline Microsoft::WRL::ComPtr<IDWriteFactory> GetDWriteFactory()
-            {
-                return graph::GraphManager::GetInstance()->GetDWriteFactory();
-            }
-
             TextBlock::TextBlock(const Microsoft::WRL::ComPtr<IDWriteTextFormat>& init_text_format,
-                const Microsoft::WRL::ComPtr<ID2D1Brush>& init_brush) : Control(false)
-            {
-                text_format_ = init_text_format == nullptr ? graph::CreateDefaultTextFormat() : init_text_format;
-
-                RecreateTextLayout();
-
-                brush_ = init_brush == nullptr ? CreateSolidBrush(D2D1::ColorF(D2D1::ColorF::Black)) : init_brush;
-
-                selection_brush_ = CreateSolidBrush(D2D1::ColorF(D2D1::ColorF::LightSkyBlue));
-            }
-
-            TextBlock::~TextBlock() = default;
-
-            void TextBlock::SetText(const String& text)
-            {
-                if (text_ != text)
-                {
-                    const auto old_text = text_;
-                    text_ = text;
-                    OnTextChangedCore(old_text, text);
-                }
-            }
-
-            void TextBlock::SetBrush(const Microsoft::WRL::ComPtr<ID2D1Brush>& brush)
-            {
-                brush_ = brush;
-                Repaint();
-            }
-
-            void TextBlock::SetTextFormat(const Microsoft::WRL::ComPtr<IDWriteTextFormat>& text_format)
-            {
-                text_format_ = text_format;
-                RecreateTextLayout();
-                Repaint();
-            }
-
-            void TextBlock::AddTextLayoutHandler(TextLayoutHandlerPtr handler)
-            {
-                text_layout_handlers_.push_back(std::move(handler));
-            }
-
-            void TextBlock::RemoveTextLayoutHandler(const TextLayoutHandlerPtr& handler)
-            {
-                const auto find_result = std::find(text_layout_handlers_.cbegin(), text_layout_handlers_.cend(),
-                    handler);
-                if (find_result != text_layout_handlers_.cend())
-                    text_layout_handlers_.erase(find_result);
-            }
-
-            void TextBlock::SetSelectable(const bool is_selectable)
-            {
-                if (!is_selectable)
-                {
-                    is_selecting_ = false;
-                    selected_range_ = std::nullopt;
-                    Repaint();
-                }
-                is_selectable_ = is_selectable;
-            }
-
-            void TextBlock::SetSelectedRange(std::optional<TextRange> text_range)
+                const Microsoft::WRL::ComPtr<ID2D1Brush>& init_brush) : TextControl(init_text_format, init_brush)
             {
-                if (is_selectable_)
-                {
-                    selected_range_ = text_range;
-                    Repaint();
-                }
-            }
-
-            void TextBlock::OnSizeChangedCore(events::SizeChangedEventArgs& args)
-            {
-                Control::OnSizeChangedCore(args);
-                text_layout_->SetMaxWidth(args.GetNewSize().width);
-                text_layout_->SetMaxHeight(args.GetNewSize().height);
-                Repaint();
-            }
-
-            void TextBlock::OnDraw(ID2D1DeviceContext* device_context)
-            {
-                Control::OnDraw(device_context);
-                if (selected_range_.has_value())
-                {
-                    DWRITE_TEXT_METRICS text_metrics{};
-                    ThrowIfFailed(text_layout_->GetMetrics(&text_metrics));
-                    const auto metrics_count = text_metrics.lineCount * text_metrics.maxBidiReorderingDepth;
-
-                    Vector<DWRITE_HIT_TEST_METRICS> hit_test_metrics(metrics_count);
-                    UINT32 actual_count;
-                    text_layout_->HitTestTextRange(
-                        selected_range_.value().position, selected_range_.value().count,
-                        0, 0,
-                        hit_test_metrics.data(), metrics_count, &actual_count
-                    );
-
-                    hit_test_metrics.erase(hit_test_metrics.cbegin() + actual_count, hit_test_metrics.cend());
-
-                    for (const auto& metrics : hit_test_metrics)
-                    {
-                        device_context->FillRoundedRectangle(D2D1::RoundedRect(D2D1::RectF(metrics.left, metrics.top, metrics.left + metrics.width, metrics.top + metrics.height), 3, 3), selection_brush_.Get());
-                    }
-                }
-                device_context->DrawTextLayout(D2D1::Point2F(), text_layout_.Get(), brush_.Get());
-            }
-
-            namespace
-            {
-                std::optional<unsigned> TextLayoutHitTest(IDWriteTextLayout* text_layout, const Point& point, const bool test_inside = true)
-                {
-                    BOOL is_trailing, is_inside;
-                    DWRITE_HIT_TEST_METRICS metrics{};
-                    text_layout->HitTestPoint(point.x, point.y, &is_trailing, &is_inside, &metrics);
-                    if (!test_inside || is_inside)
-                        return is_trailing == 0 ? metrics.textPosition : metrics.textPosition + 1;
-                    else
-                        return std::nullopt;
-                }
-            }
-
-            void TextBlock::OnMouseDownCore(events::MouseButtonEventArgs& args)
-            {
-                Control::OnMouseDownCore(args);
-                if (is_selectable_ && args.GetMouseButton() == MouseButton::Left)
-                {
-                    selected_range_ = std::nullopt;
-                    const auto hit_test_result = TextLayoutHitTest(text_layout_.Get(), args.GetPoint(this), true);
-                    if (hit_test_result.has_value())
-                    {
-                        mouse_down_position_ = hit_test_result.value();
-                        is_selecting_ = true;
-                        GetWindow()->CaptureMouseFor(this);
-                    }
-                    Repaint();
-                }
-            }
-
-            void TextBlock::OnMouseMoveCore(events::MouseEventArgs& args)
-            {
-                Control::OnMouseMoveCore(args);
-                if (is_selecting_)
-                {
-                    const auto hit_test_result = TextLayoutHitTest(text_layout_.Get(), args.GetPoint(this), false).value();
-                    if (hit_test_result > mouse_down_position_)
-                        selected_range_ = TextRange(mouse_down_position_, hit_test_result - mouse_down_position_);
-                    else if (hit_test_result < mouse_down_position_)
-                        selected_range_ = TextRange(hit_test_result, mouse_down_position_ - hit_test_result);
-                    else
-                        selected_range_ = std::nullopt;
-                    Repaint();
-                }
-            }
-
-            void TextBlock::OnMouseUpCore(events::MouseButtonEventArgs& args)
-            {
-                Control::OnMouseUpCore(args);
-                if (args.GetMouseButton() == MouseButton::Left)
-                {
-                    if (is_selecting_)
-                    {
-                        is_selecting_ = false;
-                        GetWindow()->ReleaseCurrentMouseCapture();
-                    }
-                }
-            }
-
-            void TextBlock::OnLoseFocusCore(events::FocusChangeEventArgs& args)
-            {
-                Control::OnLoseFocusCore(args);
-                if (is_selecting_)
-                {
-                    is_selecting_ = false;
-                    GetWindow()->ReleaseCurrentMouseCapture();
-                }
-                if (!args.IsWindow()) // If the focus lose is triggered window-wide, then save the selection state. Otherwise, clear selection.
-                {
-                    selected_range_ = std::nullopt;
-                    Repaint();
-                }
-            }
-
-            Size TextBlock::OnMeasure(const Size& available_size)
-            {
-                const auto layout_params = GetLayoutParams();
-
-                if (layout_params->width.mode == MeasureMode::Stretch && layout_params->height.mode == MeasureMode::Stretch)
-                    return available_size;
-
-                auto&& get_measure_length = [](const LayoutSideParams& layout_length, const float available_length) -> float
-                {
-                    switch (layout_length.mode)
-                    {
-                    case MeasureMode::Exactly:
-                    {
-                        return std::min(layout_length.length, available_length);
-                    }
-                    case MeasureMode::Stretch:
-                    case MeasureMode::Content:
-                    {
-                        return available_length;
-                    }
-                    default:
-                        UnreachableCode();
-                    }
-                };
-
-                const Size measure_size(get_measure_length(layout_params->width, available_size.width),
-                    get_measure_length(layout_params->height, available_size.height));
-
-                ThrowIfFailed(text_layout_->SetMaxWidth(measure_size.width));
-                ThrowIfFailed(text_layout_->SetMaxHeight(measure_size.height));
-
-                DWRITE_TEXT_METRICS metrics{};
-
-                ThrowIfFailed(text_layout_->GetMetrics(&metrics));
-
-                const Size measure_result(metrics.width, metrics.height);
-
-                auto&& calculate_final_length = [](const LayoutSideParams& layout_length, const float measure_length, const float measure_result_length) -> float
-                {
-                    if ((layout_length.mode == MeasureMode::Stretch ||
-                        layout_length.mode == MeasureMode::Exactly)
-                        && measure_result_length < measure_length)
-                        return measure_length;
-                    else
-                        return measure_result_length;
-                };
-
-                const Size result_size(
-                    calculate_final_length(layout_params->width, measure_size.width, measure_result.width),
-                    calculate_final_length(layout_params->height, measure_size.height, measure_result.height)
-                );
-
-                return result_size;
-            }
-
-            void TextBlock::OnTextChangedCore(const String& old_text, const String& new_text)
-            {
-                RecreateTextLayout();
-                Repaint();
-            }
-
-            void TextBlock::RecreateTextLayout()
-            {
-                assert(text_format_ != nullptr);
-
-                const auto dwrite_factory = GetDWriteFactory();
-
-                const auto&& size = GetSize();
-
-                ThrowIfFailed(dwrite_factory->CreateTextLayout(
-                    text_.c_str(), static_cast<UINT32>(text_.size()),
-                    text_format_.Get(),
-                    size.width, size.height,
-                    &text_layout_
-                ));
 
-                std::for_each(text_layout_handlers_.cbegin(), text_layout_handlers_.cend(), [this](const TextLayoutHandlerPtr& handler)
-                {
-                    (*handler)(text_layout_);
-                });
             }
         }
     }