diff options
Diffstat (limited to 'CruUI/ui/controls')
| -rw-r--r-- | CruUI/ui/controls/text_block.cpp | 87 | ||||
| -rw-r--r-- | CruUI/ui/controls/text_block.h | 8 |
2 files changed, 80 insertions, 15 deletions
diff --git a/CruUI/ui/controls/text_block.cpp b/CruUI/ui/controls/text_block.cpp index 739cd793..c528d3ca 100644 --- a/CruUI/ui/controls/text_block.cpp +++ b/CruUI/ui/controls/text_block.cpp @@ -1,7 +1,5 @@ #include "text_block.h" -#include <chrono> - #include "ui/window.h" #include "graph/graph.h" #include "exception.h" @@ -18,12 +16,22 @@ namespace cru return graph::GraphManager::GetInstance()->GetDWriteFactory(); } + Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> CreateSolidBrush(const D2D1_COLOR_F& color) + { + const auto device_context = graph::GraphManager::GetInstance()->GetD2D1DeviceContext(); + Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> solid_color_brush; + device_context->CreateSolidColorBrush(color, &solid_color_brush); + return solid_color_brush; + } + TextBlock::TextBlock(const Microsoft::WRL::ComPtr<IDWriteTextFormat>& init_text_format, const Microsoft::WRL::ComPtr<ID2D1Brush>& init_brush) : Control(false) { text_format_ = init_text_format; if (init_brush == nullptr) CreateDefaultBrush(); + + selection_brush_ = CreateSolidBrush(D2D1::ColorF(D2D1::ColorF::Blue)); //TODO! } TextBlock::~TextBlock() = default; @@ -62,25 +70,83 @@ namespace cru void TextBlock::OnDraw(ID2D1DeviceContext* device_context) { if (text_layout_ != nullptr) + { + 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()); + } + } + + std::optional<unsigned> TextLayoutHitTest(IDWriteTextLayout* text_layout, const Point& point, 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) { if (args.GetMouseButton() == MouseButton::Left) { - BOOL is_trailing, is_inside; - DWRITE_HIT_TEST_METRICS metrics; - text_layout_->HitTestPoint(args.GetPoint(this).x, args.GetPoint(this).y, &is_trailing, &is_inside, &metrics); - if (is_inside) + const auto hit_test_result = TextLayoutHitTest(text_layout_.Get(), args.GetPoint(this), true); + if (hit_test_result.has_value()) { - mouse_down_position_ = is_trailing == 0 ? metrics.textPosition : metrics.textPosition + 1; - is_mouse_down_ = true; + mouse_down_position_ = hit_test_result.value(); + is_selecting_ = true; + GetWindow()->CaptureMouseFor(this); } } Control::OnMouseDownCore(args); } + void TextBlock::OnMouseMoveCore(events::MouseEventArgs& 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 + selected_range_ = TextRange(hit_test_result, mouse_down_position_ - hit_test_result); + Repaint(); + } + } + + void TextBlock::OnMouseUpCore(events::MouseButtonEventArgs& args) + { + if (args.GetMouseButton() == MouseButton::Left) + { + if (is_selecting_) + { + is_selecting_ = false; + GetWindow()->ReleaseCurrentMouseCapture(); + } + } + } + Size TextBlock::OnMeasure(const Size& available_size) { if (text_.empty()) @@ -147,10 +213,7 @@ namespace cru void TextBlock::CreateDefaultBrush() { - const auto device_context = graph::GraphManager::GetInstance()->GetD2D1DeviceContext(); - Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> solid_color_brush; - device_context->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::Black), &solid_color_brush); - brush_ = solid_color_brush; + brush_ = CreateSolidBrush(D2D1::ColorF(D2D1::ColorF::Black)); } void TextBlock::CreateDefaultTextFormat() diff --git a/CruUI/ui/controls/text_block.h b/CruUI/ui/controls/text_block.h index d6d173ba..1d1166a5 100644 --- a/CruUI/ui/controls/text_block.h +++ b/CruUI/ui/controls/text_block.h @@ -102,6 +102,7 @@ namespace cru void OnMouseDownCore(events::MouseButtonEventArgs& args) override; void OnMouseMoveCore(events::MouseEventArgs& args) override; + void OnMouseUpCore(events::MouseButtonEventArgs& args) override; Size OnMeasure(const Size& available_size) override; @@ -116,15 +117,16 @@ namespace cru String text_; Microsoft::WRL::ComPtr<ID2D1Brush> brush_; + Microsoft::WRL::ComPtr<ID2D1Brush> selection_brush_; Microsoft::WRL::ComPtr<IDWriteTextFormat> text_format_; Microsoft::WRL::ComPtr<IDWriteTextLayout> text_layout_; Vector<std::shared_ptr<TextLayoutHandler>> text_layout_handlers_; - unsigned mouse_down_position_; - std::optional<TextRange> selected_range_; + unsigned mouse_down_position_ = 0; + std::optional<TextRange> selected_range_ = std::nullopt; - bool is_mouse_down_ = false; //TODO!!! + bool is_selecting_ = false; }; } } |