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LibGUI: Turn GTextBox into a wrapper around a single-line GTextEditor.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,219 +1,10 @@ | ||
| #include "GTextBox.h" | ||
| #include <AK/StdLibExtras.h> | ||
| #include <SharedGraphics/CharacterBitmap.h> | ||
| #include <SharedGraphics/Font.h> | ||
| #include <LibGUI/GPainter.h> | ||
| #include <Kernel/KeyCode.h> | ||
| #include <LibGUI/GTextBox.h> | ||
|
|
||
| GTextBox::GTextBox(GWidget* parent) | ||
| : GWidget(parent) | ||
| : GTextEditor(GTextEditor::SingleLine, parent) | ||
| { | ||
| set_background_color(Color::White); | ||
| } | ||
|
|
||
| GTextBox::~GTextBox() | ||
| { | ||
| } | ||
|
|
||
| void GTextBox::set_text(const String& text) | ||
| { | ||
| if (m_text == text) | ||
| return; | ||
| m_text = text; | ||
| m_cursor_position = m_text.length(); | ||
| scroll_cursor_into_view(HorizontalDirection::Right); | ||
| update(); | ||
| } | ||
|
|
||
| void GTextBox::scroll_cursor_into_view(HorizontalDirection direction) | ||
| { | ||
| if (visible_content_rect().contains(cursor_content_position())) | ||
| return; | ||
| int total_text_width = font().width(m_text); | ||
| dbgprintf("total_text_width = %d, visible_content width = %d\n", total_text_width, visible_content_rect().width()); | ||
| if (total_text_width < visible_content_rect().width()) { | ||
| m_scroll_offset = 0; | ||
| return; | ||
| } | ||
| if (direction == HorizontalDirection::Left) { | ||
| dbgprintf("Left, orig offset = %d\n", m_scroll_offset); | ||
| m_scroll_offset = cursor_content_position().x(); | ||
| int offset_into_visible = m_scroll_offset - visible_content_rect().x(); | ||
| if (offset_into_visible < font().glyph_width(' ')) | ||
| m_scroll_offset -= width() / 2; | ||
| } else { | ||
| m_scroll_offset = cursor_content_position().x() - visible_content_rect().width(); | ||
| dbgprintf("Right, orig offset = %d\n", m_scroll_offset); | ||
| int offset_into_visible = m_scroll_offset - visible_content_rect().x(); | ||
| if (offset_into_visible > width() / 4) { | ||
| dbgprintf("Right, adjust offset = %d\n", m_scroll_offset); | ||
| m_scroll_offset += width() / 2; | ||
| } | ||
| } | ||
| if (m_scroll_offset < 0) | ||
| m_scroll_offset = 0; | ||
| if (m_scroll_offset > total_text_width)dbgprintf("Right, adjust offset = %d\n", m_scroll_offset); | ||
| m_scroll_offset = total_text_width - width(); | ||
| } | ||
|
|
||
| Rect GTextBox::visible_content_rect() const | ||
| { | ||
| if (rect().is_empty()) | ||
| return { }; | ||
| return { m_scroll_offset, 0, rect().shrunken(6, 6).width(), rect().shrunken(6, 6).height() }; | ||
| } | ||
|
|
||
| Point GTextBox::cursor_content_position() const | ||
| { | ||
| int x = 0; | ||
| for (int i = 0; i < m_cursor_position; ++i) | ||
| x += font().glyph_width(m_text[i]) + font().glyph_spacing(); | ||
| return { x, 0 }; | ||
| } | ||
|
|
||
| void GTextBox::paint_event(GPaintEvent& event) | ||
| { | ||
| GPainter painter(*this); | ||
| painter.add_clip_rect(event.rect()); | ||
|
|
||
| painter.fill_rect(rect().shrunken(2, 2), background_color()); | ||
| painter.draw_rect(rect(), foreground_color()); | ||
|
|
||
| if (is_focused()) | ||
| painter.draw_focus_rect(rect()); | ||
|
|
||
| Rect inner_rect = rect(); | ||
| inner_rect.shrink(6, 6); | ||
|
|
||
| painter.add_clip_rect(inner_rect); | ||
| painter.translate(-m_scroll_offset, 0); | ||
|
|
||
| int space_width = font().glyph_width(' ') + font().glyph_spacing(); | ||
| int x = inner_rect.x(); | ||
| int y = inner_rect.center().y() - font().glyph_height() / 2; | ||
|
|
||
| for (int i = 0; i < m_text.length(); ++i) { | ||
| char ch = m_text[i]; | ||
| if (ch == ' ') { | ||
| x += space_width; | ||
| continue; | ||
| } | ||
| painter.draw_glyph({x, y}, ch, Color::Black); | ||
| x += font().glyph_width(ch) + font().glyph_spacing(); | ||
| } | ||
|
|
||
| if (is_focused() && m_cursor_blink_state) { | ||
| Rect cursor_rect { | ||
| inner_rect.x() + cursor_content_position().x(), | ||
| inner_rect.y(), | ||
| 1, | ||
| inner_rect.height() | ||
| }; | ||
| painter.fill_rect(cursor_rect, foreground_color()); | ||
| } | ||
| } | ||
|
|
||
| void GTextBox::mousedown_event(GMouseEvent&) | ||
| { | ||
| } | ||
|
|
||
| void GTextBox::handle_backspace() | ||
| { | ||
| if (m_cursor_position == 0) | ||
| return; | ||
|
|
||
| if (m_text.length() == 1) { | ||
| m_text = String::empty(); | ||
| m_cursor_position = 0; | ||
| m_scroll_offset = 0; | ||
| if (on_change) | ||
| on_change(*this); | ||
| update(); | ||
| return; | ||
| } | ||
|
|
||
| char* buffer; | ||
| auto new_text = StringImpl::create_uninitialized(m_text.length() - 1, buffer); | ||
|
|
||
| memcpy(buffer, m_text.characters(), m_cursor_position - 1); | ||
| memcpy(buffer + m_cursor_position - 1, m_text.characters() + m_cursor_position, m_text.length() - (m_cursor_position - 1)); | ||
|
|
||
| m_text = move(new_text); | ||
| --m_cursor_position; | ||
| scroll_cursor_into_view(HorizontalDirection::Left); | ||
| if (on_change) | ||
| on_change(*this); | ||
| update(); | ||
| } | ||
|
|
||
| void GTextBox::keydown_event(GKeyEvent& event) | ||
| { | ||
| switch (event.key()) { | ||
| case KeyCode::Key_Left: | ||
| if (m_cursor_position) { | ||
| --m_cursor_position; | ||
| scroll_cursor_into_view(HorizontalDirection::Left); | ||
| } | ||
| m_cursor_blink_state = true; | ||
| update(); | ||
| return; | ||
| case KeyCode::Key_Right: | ||
| if (m_cursor_position < m_text.length()) { | ||
| ++m_cursor_position; | ||
| scroll_cursor_into_view(HorizontalDirection::Right); | ||
| } | ||
| m_cursor_blink_state = true; | ||
| update(); | ||
| return; | ||
| case KeyCode::Key_Backspace: | ||
| return handle_backspace(); | ||
| case KeyCode::Key_Return: | ||
| if (on_return_pressed) | ||
| on_return_pressed(*this); | ||
| return; | ||
| } | ||
|
|
||
| if (!event.text().is_empty()) { | ||
| ASSERT(event.text().length() == 1); | ||
|
|
||
| char* buffer; | ||
| auto new_text = StringImpl::create_uninitialized(m_text.length() + 1, buffer); | ||
|
|
||
| memcpy(buffer, m_text.characters(), m_cursor_position); | ||
| buffer[m_cursor_position] = event.text()[0]; | ||
| memcpy(buffer + m_cursor_position + 1, m_text.characters() + m_cursor_position, m_text.length() - m_cursor_position); | ||
|
|
||
| m_text = move(new_text); | ||
| ++m_cursor_position; | ||
| scroll_cursor_into_view(HorizontalDirection::Right); | ||
| if (on_change) | ||
| on_change(*this); | ||
| update(); | ||
| return; | ||
| } | ||
| } | ||
|
|
||
| void GTextBox::timer_event(GTimerEvent&) | ||
| { | ||
| // FIXME: Disable the timer when not focused. | ||
| if (!is_focused()) | ||
| return; | ||
|
|
||
| m_cursor_blink_state = !m_cursor_blink_state; | ||
| update(); | ||
| } | ||
|
|
||
| void GTextBox::focusin_event(GEvent&) | ||
| { | ||
| start_timer(500); | ||
| } | ||
|
|
||
| void GTextBox::focusout_event(GEvent&) | ||
| { | ||
| stop_timer(); | ||
| } | ||
|
|
||
| void GTextBox::resize_event(GResizeEvent&) | ||
| { | ||
| scroll_cursor_into_view(HorizontalDirection::Right); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,39 +1,13 @@ | ||
| #pragma once | ||
|
|
||
| #include "GWidget.h" | ||
| #include <LibGUI/GTextEditor.h> | ||
| #include <AK/Function.h> | ||
|
|
||
| class GTextBox final : public GWidget { | ||
| class GTextBox final : public GTextEditor { | ||
| public: | ||
| explicit GTextBox(GWidget* parent); | ||
| virtual ~GTextBox() override; | ||
|
|
||
| String text() const { return m_text; } | ||
| void set_text(const String&); | ||
|
|
||
| Function<void(GTextBox&)> on_return_pressed; | ||
| Function<void(GTextBox&)> on_change; | ||
|
|
||
| virtual const char* class_name() const override { return "GTextBox"; } | ||
|
|
||
| private: | ||
| virtual void paint_event(GPaintEvent&) override; | ||
| virtual void mousedown_event(GMouseEvent&) override; | ||
| virtual void keydown_event(GKeyEvent&) override; | ||
| virtual void timer_event(GTimerEvent&) override; | ||
| virtual void focusin_event(GEvent&) override; | ||
| virtual void focusout_event(GEvent&) override; | ||
| virtual void resize_event(GResizeEvent&) override; | ||
| virtual bool accepts_focus() const override { return true; } | ||
|
|
||
| Point cursor_content_position() const; | ||
| Rect visible_content_rect() const; | ||
| void handle_backspace(); | ||
| void scroll_cursor_into_view(HorizontalDirection); | ||
|
|
||
| String m_text; | ||
| int m_cursor_position { 0 }; | ||
| int m_scroll_offset { 0 }; | ||
| bool m_cursor_blink_state { false }; | ||
| }; | ||
|
|
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