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LibWeb: Implement basic text copying :^)

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You can now press Ctrl+C to copy the selected text in a Web::PageView
to the system clipboard. Very cool!
This commit is contained in:
Andreas Kling 2020-07-03 20:35:19 +02:00
parent da66d99566
commit f87881e198
2 changed files with 54 additions and 0 deletions
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49
Libraries/LibWeb/PageView.cpp
View file

@ -28,7 +28,9 @@
#include <AK/URL.h>
#include <LibCore/File.h>
#include <LibCore/MimeData.h>
#include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/Clipboard.h>
#include <LibGUI/Painter.h>
#include <LibGUI/ScrollBar.h>
#include <LibGUI/Window.h>
@ -45,6 +47,7 @@
#include <LibWeb/Frame/Frame.h>
#include <LibWeb/Layout/LayoutDocument.h>
#include <LibWeb/Layout/LayoutNode.h>
#include <LibWeb/Layout/LayoutText.h>
#include <LibWeb/Loader/ResourceLoader.h>
#include <LibWeb/PageView.h>
#include <LibWeb/Painting/PaintContext.h>
@ -60,12 +63,58 @@ PageView::PageView()
{
set_should_hide_unnecessary_scrollbars(true);
set_background_role(ColorRole::Base);
m_copy_action = GUI::CommonActions::make_copy_action([this](auto&) {
GUI::Clipboard::the().set_data(selected_text(), "text/plain");
});
}
PageView::~PageView()
{
}
String PageView::selected_text() const
{
StringBuilder builder;
auto* layout_root = this->layout_root();
if (!layout_root)
return {};
if (!layout_root->selection().is_valid())
return {};
auto selection = layout_root->selection().normalized();
if (selection.start().layout_node == selection.end().layout_node) {
if (!is<LayoutText>(*selection.start().layout_node))
return "";
return to<LayoutText>(*selection.start().layout_node).text_for_rendering().substring(selection.start().index_in_node, selection.end().index_in_node - selection.start().index_in_node + 1);
}
// Start node
auto layout_node = selection.start().layout_node;
if (is<LayoutText>(*layout_node)) {
auto& text = to<LayoutText>(*layout_node).text_for_rendering();
builder.append(text.substring(selection.start().index_in_node, text.length() - selection.start().index_in_node));
}
// Middle nodes
layout_node = layout_node->next_in_pre_order();
while (layout_node && layout_node != selection.end().layout_node) {
if (is<LayoutText>(*layout_node))
builder.append(to<LayoutText>(*layout_node).text_for_rendering());
layout_node = layout_node->next_in_pre_order();
}
// End node
ASSERT(layout_node == selection.end().layout_node);
if (is<LayoutText>(*layout_node)) {
auto& text = to<LayoutText>(*layout_node).text_for_rendering();
builder.append(text.substring(0, selection.end().index_in_node + 1));
}
return builder.to_string();
}
void PageView::page_did_layout()
{
set_content_size(layout_root()->size().to_int_size());