diff options
Diffstat (limited to 'src/ui/controls/text_control.cpp')
| -rw-r--r-- | src/ui/controls/text_control.cpp | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/src/ui/controls/text_control.cpp b/src/ui/controls/text_control.cpp deleted file mode 100644 index e53d3c69..00000000 --- a/src/ui/controls/text_control.cpp +++ /dev/null @@ -1,250 +0,0 @@ -#include "text_control.hpp" - -#include <cassert> - -#include "ui/window.hpp" -#include "graph/graph.hpp" -#include "exception.hpp" -#include "ui/ui_manager.hpp" - -namespace cru::ui::controls -{ - namespace - { - unsigned TextLayoutHitTest(IDWriteTextLayout* text_layout, const Point& point) - { - BOOL is_trailing, is_inside; - DWRITE_HIT_TEST_METRICS metrics{}; - text_layout->HitTestPoint(point.x, point.y, &is_trailing, &is_inside, &metrics); - return is_trailing == 0 ? metrics.textPosition : metrics.textPosition + 1; - } - - void DrawSelectionRect(ID2D1DeviceContext* device_context, IDWriteTextLayout* layout, ID2D1Brush* brush, const std::optional<TextRange> range) - { - if (range.has_value()) - { - DWRITE_TEXT_METRICS text_metrics{}; - ThrowIfFailed(layout->GetMetrics(&text_metrics)); - const auto metrics_count = text_metrics.lineCount * text_metrics.maxBidiReorderingDepth; - - std::vector<DWRITE_HIT_TEST_METRICS> hit_test_metrics(metrics_count); - UINT32 actual_count; - layout->HitTestTextRange( - range.value().position, 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), brush); - } - } - } - - TextControl::TextControl(const Microsoft::WRL::ComPtr<IDWriteTextFormat>& init_text_format, - const Microsoft::WRL::ComPtr<ID2D1Brush>& init_brush) - { - text_format_ = init_text_format; - - RecreateTextLayout(); - - brush_ = init_brush; - - selection_brush_ = UiManager::GetInstance()->GetPredefineResources()->text_control_selection_brush; - - SetClipContent(true); - - draw_content_event.AddHandler([this](events::DrawEventArgs& args) - { - const auto device_context = args.GetDeviceContext(); - DrawSelectionRect(device_context, text_layout_.Get(), selection_brush_.Get(), selected_range_); - device_context->DrawTextLayout(D2D1::Point2F(), text_layout_.Get(), brush_.Get()); - }); - - mouse_down_event.bubble.AddHandler([this](events::MouseButtonEventArgs& args) - { - if (is_selectable_ && args.GetMouseButton() == MouseButton::Left && GetRect(RectRange::Padding).IsPointInside(args.GetPoint(this, RectRange::Margin))) - { - selected_range_ = std::nullopt; - const auto hit_test_result = TextLayoutHitTest(text_layout_.Get(), args.GetPoint(this)); - RequestChangeCaretPosition(hit_test_result); - mouse_down_position_ = hit_test_result; - is_selecting_ = true; - GetWindow()->CaptureMouseFor(this); - InvalidateDraw(); - } - }); - - mouse_move_event.bubble.AddHandler([this](events::MouseEventArgs& args) - { - if (is_selecting_) - { - const auto hit_test_result = TextLayoutHitTest(text_layout_.Get(), args.GetPoint(this)); - RequestChangeCaretPosition(hit_test_result); - selected_range_ = TextRange::FromTwoSides(hit_test_result, mouse_down_position_); - InvalidateDraw(); - } - UpdateCursor(args.GetPoint(this, RectRange::Margin)); - }); - - - mouse_up_event.bubble.AddHandler([this](events::MouseButtonEventArgs& args) - { - if (args.GetMouseButton() == MouseButton::Left) - { - if (is_selecting_) - { - is_selecting_ = false; - GetWindow()->ReleaseCurrentMouseCapture(); - } - } - }); - - lose_focus_event.direct.AddHandler([this](events::FocusChangeEventArgs& 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; - InvalidateDraw(); - } - }); - } - - - void TextControl::SetText(const String& text) - { - if (text_ != text) - { - const auto old_text = text_; - text_ = text; - OnTextChangedCore(old_text, text); - } - } - - void TextControl::SetBrush(const Microsoft::WRL::ComPtr<ID2D1Brush>& brush) - { - brush_ = brush; - InvalidateDraw(); - } - - void TextControl::SetTextFormat(const Microsoft::WRL::ComPtr<IDWriteTextFormat>& text_format) - { - text_format_ = text_format; - RecreateTextLayout(); - InvalidateDraw(); - } - - void TextControl::SetSelectable(const bool is_selectable) - { - if (is_selectable_ != is_selectable) - { - if (!is_selectable) - { - if (is_selecting_) - { - is_selecting_ = false; - GetWindow()->ReleaseCurrentMouseCapture(); - } - selected_range_ = std::nullopt; - InvalidateDraw(); - } - is_selectable_ = is_selectable; - UpdateCursor(std::nullopt); - } - } - - void TextControl::SetSelectedRange(std::optional<TextRange> text_range) - { - if (is_selectable_) - { - selected_range_ = text_range; - InvalidateDraw(); - } - } - - Size TextControl::OnMeasureContent(const Size& available_size, const AdditionalMeasureInfo&) - { - ThrowIfFailed(text_layout_->SetMaxWidth(available_size.width)); - ThrowIfFailed(text_layout_->SetMaxHeight(available_size.height)); - - DWRITE_TEXT_METRICS metrics{}; - - ThrowIfFailed(text_layout_->GetMetrics(&metrics)); - - const Size measure_result(metrics.width, metrics.height); - - return measure_result; - } - - void TextControl::RequestChangeCaretPosition(unsigned position) - { - - } - - void TextControl::OnRectChange(const Rect& old_rect, const Rect& new_rect) - { - const auto content = GetRect(RectRange::Content); - ThrowIfFailed(text_layout_->SetMaxWidth(content.width)); - ThrowIfFailed(text_layout_->SetMaxHeight(content.height)); - } - - void TextControl::OnTextChangedCore(const String& old_text, const String& new_text) - { - RecreateTextLayout(); - InvalidateLayout(); - InvalidateDraw(); - } - - void TextControl::RecreateTextLayout() - { - assert(text_format_ != nullptr); - - text_layout_ = nullptr; - - const auto dwrite_factory = graph::GraphManager::GetInstance()->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_ - )); - } - - void TextControl::UpdateCursor(const std::optional<Point>& point) - { - if (!is_selectable_) - { - SetCursor(nullptr); - return; - } - - const auto window = GetWindow(); - if (window == nullptr) - { - SetCursor(nullptr); - return; - } - - if (is_selecting_) - { - SetCursor(cursors::i_beam); - return; - } - - const auto p = point.value_or(WindowToControl(window->GetMousePosition())); - if (GetRect(RectRange::Padding).IsPointInside(p)) - SetCursor(cursors::i_beam); - else - SetCursor(nullptr); - } -} |