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-rw-r--r--src/ui/controls/text_block.cpp265
1 files changed, 1 insertions, 264 deletions
diff --git a/src/ui/controls/text_block.cpp b/src/ui/controls/text_block.cpp
index 93d66ba6..30ffbef9 100644
--- a/src/ui/controls/text_block.cpp
+++ b/src/ui/controls/text_block.cpp
@@ -10,273 +10,10 @@ 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_);
- });
}
}
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-29 07:17:01 +0000