mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:22:43 +00:00
8a48246ed1
This class had slightly confusing semantics and the added weirdness doesn't seem worth it just so we can say "." instead of "->" when iterating over a vector of NNRPs. This patch replaces NonnullRefPtrVector<T> with Vector<NNRP<T>>.
315 lines
13 KiB
C++
315 lines
13 KiB
C++
/*
|
|
* Copyright (c) 2022, Timothy Slater <tslater2006@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "TextTool.h"
|
|
#include "../ImageEditor.h"
|
|
#include "../Layer.h"
|
|
#include <LibGUI/Action.h>
|
|
#include <LibGUI/BoxLayout.h>
|
|
#include <LibGUI/Button.h>
|
|
#include <LibGUI/FontPicker.h>
|
|
#include <LibGUI/Label.h>
|
|
#include <LibGUI/Menu.h>
|
|
#include <LibGUI/Painter.h>
|
|
#include <LibGUI/TextBox.h>
|
|
#include <LibGfx/Bitmap.h>
|
|
#include <LibGfx/Palette.h>
|
|
|
|
namespace PixelPaint {
|
|
|
|
TextToolEditor::TextToolEditor()
|
|
: TextEditor(TextEditor::MultiLine)
|
|
{
|
|
}
|
|
|
|
void TextToolEditor::handle_keyevent(Badge<TextTool>, GUI::KeyEvent& event)
|
|
{
|
|
TextEditor::keydown_event(event);
|
|
}
|
|
|
|
Vector<NonnullRefPtr<GUI::Action>> TextToolEditor::actions()
|
|
{
|
|
static Vector<NonnullRefPtr<GUI::Action>> actions = { cut_action(), copy_action(), paste_action(), undo_action(), redo_action(), select_all_action() };
|
|
return actions;
|
|
}
|
|
|
|
TextTool::TextTool()
|
|
{
|
|
m_text_editor = TextToolEditor::construct();
|
|
m_text_editor->set_wrapping_mode(GUI::TextEditor::WrappingMode::NoWrap);
|
|
m_selected_font = Gfx::FontDatabase::default_font();
|
|
m_text_editor->set_font(m_selected_font);
|
|
m_cursor_blink_timer = Core::Timer::create_repeating(500, [&]() {
|
|
m_cursor_blink_state = !m_cursor_blink_state;
|
|
}).release_value_but_fixme_should_propagate_errors();
|
|
}
|
|
|
|
void TextTool::on_primary_color_change(Color color)
|
|
{
|
|
m_text_color = color;
|
|
}
|
|
|
|
void TextTool::on_tool_deactivation()
|
|
{
|
|
reset_tool();
|
|
}
|
|
void TextTool::on_mousemove(Layer*, MouseEvent& event)
|
|
{
|
|
if (m_text_input_is_active) {
|
|
auto mouse_position = editor_stroke_position(event.layer_event().position(), 1);
|
|
m_mouse_is_over_text = m_ants_rect.contains(mouse_position);
|
|
m_editor->update_tool_cursor();
|
|
}
|
|
|
|
if (m_is_dragging) {
|
|
auto new_position = event.layer_event().position();
|
|
m_add_text_position = m_add_text_position + (new_position - m_drag_start_point);
|
|
m_drag_start_point = new_position;
|
|
}
|
|
}
|
|
void TextTool::on_mouseup(Layer*, MouseEvent&)
|
|
{
|
|
m_is_dragging = false;
|
|
}
|
|
void TextTool::on_mousedown(Layer*, MouseEvent& event)
|
|
{
|
|
auto start_text_region = [&] {
|
|
m_text_color = m_editor->color_for(event.layer_event());
|
|
m_text_input_is_active = true;
|
|
m_text_editor->set_text(""sv);
|
|
m_add_text_position = event.layer_event().position();
|
|
m_editor->image().selection().begin_interactive_selection();
|
|
m_cursor_blink_timer->start();
|
|
m_editor->update();
|
|
};
|
|
|
|
if (!m_text_input_is_active) {
|
|
start_text_region();
|
|
return;
|
|
}
|
|
|
|
if (m_mouse_is_over_text) {
|
|
m_is_dragging = true;
|
|
m_drag_start_point = event.layer_event().position();
|
|
} else {
|
|
// User clicked somewhere outside the currently edited text region
|
|
// apply the current text and then start a new one where they clicked.
|
|
apply_text_to_layer();
|
|
reset_tool();
|
|
start_text_region();
|
|
}
|
|
}
|
|
|
|
ErrorOr<GUI::Widget*> TextTool::get_properties_widget()
|
|
{
|
|
if (m_properties_widget)
|
|
return m_properties_widget.ptr();
|
|
|
|
auto properties_widget = TRY(GUI::Widget::try_create());
|
|
(void)TRY(properties_widget->try_set_layout<GUI::VerticalBoxLayout>());
|
|
|
|
auto font_header = TRY(properties_widget->try_add<GUI::Label>("Current Font:"));
|
|
font_header->set_text_alignment(Gfx::TextAlignment::CenterLeft);
|
|
|
|
m_font_label = TRY(properties_widget->try_add<GUI::Label>(m_selected_font->human_readable_name()));
|
|
|
|
auto change_font_button = TRY(properties_widget->try_add<GUI::Button>(TRY("Change Font..."_string)));
|
|
change_font_button->on_click = [this](auto) {
|
|
auto picker = GUI::FontPicker::construct(nullptr, m_selected_font, false);
|
|
if (picker->exec() == GUI::Dialog::ExecResult::OK) {
|
|
m_font_label->set_text(picker->font()->human_readable_name());
|
|
m_selected_font = picker->font();
|
|
m_text_editor->set_font(m_selected_font);
|
|
m_editor->set_focus(true);
|
|
}
|
|
};
|
|
|
|
m_properties_widget = properties_widget;
|
|
return m_properties_widget.ptr();
|
|
}
|
|
|
|
void TextTool::on_second_paint(Layer const* layer, GUI::PaintEvent& event)
|
|
{
|
|
if (!m_text_input_is_active)
|
|
return;
|
|
|
|
GUI::Painter painter(*m_editor);
|
|
painter.add_clip_rect(event.rect());
|
|
painter.translate(editor_layer_location(*layer));
|
|
auto typed_text = m_text_editor->text();
|
|
auto text_width = max<int>(m_selected_font->width(typed_text), m_selected_font->width(" "sv));
|
|
auto text_height = static_cast<int>(ceilf(m_selected_font->preferred_line_height() * max<int>(static_cast<int>(m_text_editor->line_count()), 1)));
|
|
auto text_location = editor_stroke_position(m_add_text_position, 1);
|
|
|
|
// Since ImageEditor can be zoomed in/out, we need to be able to render the preview properly scaled
|
|
// GUI::Painter doesn't have a way to draw a font scaled directly, so we draw the text to a bitmap
|
|
// and then scale the bitmap and blit the result to the ImageEditor.
|
|
auto text_bitmap_result = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, { text_width, text_height });
|
|
if (text_bitmap_result.is_error())
|
|
return;
|
|
auto text_bitmap = text_bitmap_result.release_value();
|
|
auto text_painter = GUI::Painter(text_bitmap);
|
|
text_painter.set_font(*m_selected_font);
|
|
text_painter.draw_text(Gfx::IntRect { 0, 0, text_width, text_height }, typed_text, Gfx::TextAlignment::TopLeft, m_text_color);
|
|
|
|
m_text_editor->update();
|
|
|
|
// Draw selected text (if any)
|
|
if (m_text_editor->has_selection()) {
|
|
auto selection = m_text_editor->selection();
|
|
|
|
// Draw selected text for each line...
|
|
auto selection_start_line = selection.normalized().start().line();
|
|
auto selection_end_line = selection.normalized().end().line();
|
|
|
|
for (auto i = selection_start_line; i <= selection_end_line; ++i) {
|
|
|
|
auto start_col = 0;
|
|
auto end_col = 0;
|
|
|
|
// First line of selection.
|
|
if (i == selection_start_line) {
|
|
|
|
if (i < selection_end_line) {
|
|
// multiple lines selected. we select from selection start to the end of the line
|
|
start_col = m_text_editor->selection().normalized().start().column();
|
|
end_col = m_text_editor->line(i).length();
|
|
} else {
|
|
// only a single line in the selection
|
|
start_col = m_text_editor->selection().normalized().start().column();
|
|
end_col = m_text_editor->selection().normalized().end().column();
|
|
}
|
|
} else if (i == selection_end_line) {
|
|
// We are highlighting the final line of the selection.
|
|
// Start from first char and continue to selection end.
|
|
start_col = 0;
|
|
end_col = m_text_editor->selection().normalized().end().column();
|
|
} else {
|
|
// We are between the start and end lines, highlight the whole thing.
|
|
start_col = 0;
|
|
end_col = m_text_editor->line(i).length();
|
|
}
|
|
auto line_selection_length = end_col - start_col;
|
|
auto selected_string = m_text_editor->line(i).view().substring_view(start_col, line_selection_length);
|
|
auto text_before_selection = m_text_editor->line(i).view().substring_view(0, start_col);
|
|
auto selected_width = m_selected_font->width(selected_string);
|
|
auto selection_x_offset = m_selected_font->width(text_before_selection);
|
|
|
|
// the + 4 here is because that's how Painter::do_draw_text calculates line height, instead of asking
|
|
// the font it's preferred line height. If we don't replicate that here, the letters jump around when they
|
|
// get selected.
|
|
auto selection_y_offset = static_cast<int>((m_selected_font->pixel_size() + 4) * i);
|
|
|
|
auto selection_rect = Gfx::IntRect(selection_x_offset, selection_y_offset, selected_width, m_selected_font->preferred_line_height());
|
|
text_painter.fill_rect(selection_rect, m_text_editor->palette().selection());
|
|
text_painter.draw_text(selection_rect, selected_string, Gfx::TextAlignment::TopLeft, m_text_editor->palette().selection_text());
|
|
}
|
|
}
|
|
|
|
auto scaled_width = static_cast<int>(ceilf(m_editor->scale() * static_cast<float>(text_bitmap->width())));
|
|
auto scaled_height = static_cast<int>(ceilf(m_editor->scale() * static_cast<float>(text_bitmap->height())));
|
|
auto scaled_rect = Gfx::IntRect(text_location.x(), text_location.y(), scaled_width, scaled_height);
|
|
scaled_rect.set_location({ text_location.x(), text_location.y() });
|
|
painter.draw_scaled_bitmap(scaled_rect, text_bitmap, text_bitmap->rect(), 1.0);
|
|
|
|
// marching ants box
|
|
auto right_padding = static_cast<int>(ceilf(m_selected_font->width(" "sv)));
|
|
m_ants_rect = Gfx::IntRect(text_location.translated(-4, -2), { scaled_rect.width() + 4 + right_padding, scaled_rect.height() + 4 });
|
|
m_editor->draw_marching_ants(painter, m_ants_rect);
|
|
|
|
// Draw the blinking cursor.
|
|
if (m_cursor_blink_state) {
|
|
auto editor_cursor_rect = m_text_editor->cursor_content_rect();
|
|
|
|
// TextEditor starts left most at 3, for TextTool this ends up putting the cursor in the middle of the letter.
|
|
// Looks better if we treat 0 as left most here, so we just translate it to the left.
|
|
editor_cursor_rect.translate_by(-3, 0);
|
|
|
|
// ImageEditor scale is a float, but we are working with int and IntRects.
|
|
auto scaled_cursor_x = static_cast<int>(ceilf(m_editor->scale() * static_cast<float>(editor_cursor_rect.x())));
|
|
auto scaled_cursor_y = static_cast<int>(ceilf(m_editor->scale() * static_cast<float>(editor_cursor_rect.y())));
|
|
auto scaled_cursor_width = static_cast<int>(ceilf(m_editor->scale() * static_cast<float>(editor_cursor_rect.width())));
|
|
auto scaled_cursor_height = static_cast<int>(ceilf(m_editor->scale() * static_cast<float>(editor_cursor_rect.height())));
|
|
|
|
auto scaled_cursor_rect = Gfx::IntRect { scaled_cursor_x + text_location.x(),
|
|
scaled_cursor_y + text_location.y(),
|
|
scaled_cursor_width,
|
|
scaled_cursor_height };
|
|
painter.fill_rect(scaled_cursor_rect, m_text_color);
|
|
}
|
|
}
|
|
|
|
void TextTool::apply_text_to_layer()
|
|
{
|
|
auto layer = m_editor->active_layer();
|
|
GUI::Painter painter(layer->get_scratch_edited_bitmap());
|
|
|
|
auto demo_text = m_text_editor->text();
|
|
auto text_width = m_selected_font->width(demo_text);
|
|
auto text_height = static_cast<int>(ceilf(m_selected_font->preferred_line_height() * static_cast<int>(m_text_editor->line_count())));
|
|
|
|
painter.set_font(*m_selected_font);
|
|
auto text_rect = Gfx::Rect<int>(m_add_text_position, { static_cast<int>(ceilf(text_width)), text_height });
|
|
painter.draw_text(text_rect, demo_text, Gfx::TextAlignment::TopLeft, m_text_color);
|
|
m_editor->did_complete_action(tool_name());
|
|
layer->did_modify_bitmap(text_rect);
|
|
}
|
|
void TextTool::reset_tool()
|
|
{
|
|
// This puts the tool back into initial state between text additions (except for selected font/color)
|
|
m_text_input_is_active = false;
|
|
m_is_dragging = false;
|
|
m_mouse_is_over_text = false;
|
|
m_text_editor->set_text(""sv);
|
|
m_editor->image().selection().end_interactive_selection();
|
|
m_cursor_blink_timer->stop();
|
|
m_editor->update();
|
|
m_editor->update_tool_cursor();
|
|
}
|
|
bool TextTool::on_keydown(GUI::KeyEvent& event)
|
|
{
|
|
if (!m_text_input_is_active)
|
|
return false;
|
|
|
|
// Cancels current text entry
|
|
if (event.key() == Key_Escape) {
|
|
reset_tool();
|
|
return true;
|
|
}
|
|
|
|
// A plain Return is treated as accepting the current state and rasterizing to the layer.
|
|
// For multi-line text Shift + Enter will add new lines.
|
|
if (event.modifiers() == Mod_None && event.key() == Key_Return) {
|
|
apply_text_to_layer();
|
|
reset_tool();
|
|
return true;
|
|
}
|
|
|
|
// Pass key events that would normally be handled by menu shortcuts to our TextEditor subclass.
|
|
for (auto& action : m_text_editor->actions()) {
|
|
auto const& shortcut = action->shortcut();
|
|
if (event.key() == shortcut.key() && event.modifiers() == shortcut.modifiers()) {
|
|
action->activate(m_text_editor);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Pass the key event off to our TextEditor subclass which handles all text entry features like
|
|
// caret navigation, backspace/delete, etc.
|
|
m_text_editor->handle_keyevent({}, event);
|
|
m_editor->update();
|
|
return true;
|
|
}
|
|
|
|
Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap const>> TextTool::cursor()
|
|
{
|
|
if (m_mouse_is_over_text)
|
|
return Gfx::StandardCursor::Move;
|
|
|
|
return Gfx::StandardCursor::Arrow;
|
|
}
|
|
|
|
}
|