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LibVT/Terminal: add a scroll length to the TerminalWidget

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The scroll length is the number of lines by which the terminal will go
up/down when scrolling the mouse wheel once.
This commit is contained in:
Benoît Lormeau 2020-06-29 22:28:18 +02:00 • committed by Andreas Kling
parent f20becf71b
commit 310fbe48e5
3 changed files with 29 additions and 2 deletions
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16
Applications/Terminal/main.cpp
View file

@ -37,6 +37,7 @@
#include <LibGUI/MenuBar.h>
#include <LibGUI/RadioButton.h>
#include <LibGUI/Slider.h>
#include <LibGUI/SpinBox.h>
#include <LibGUI/Widget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Font.h>
@ -138,7 +139,7 @@ RefPtr<GUI::Window> create_settings_window(TerminalWidget& terminal)
auto window = GUI::Window::construct();
window->set_title("Terminal Settings");
window->set_resizable(false);
window->set_rect(50, 50, 200, 140);
window->set_rect(50, 50, 200, 185);
window->set_modal(true);
auto& settings = window->set_main_widget<GUI::Widget>();
@ -175,6 +176,19 @@ RefPtr<GUI::Window> create_settings_window(TerminalWidget& terminal)
slider.set_range(0, 255);
slider.set_value(terminal.opacity());
auto& spinbox_container = settings.add<GUI::GroupBox>("Scroll Length");
spinbox_container.set_layout<GUI::VerticalBoxLayout>();
spinbox_container.layout()->set_margins({ 6, 16, 6, 6 });
spinbox_container.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
spinbox_container.set_preferred_size(100, 46);
auto& spinbox = spinbox_container.add<GUI::SpinBox>();
spinbox.set_min(1);
spinbox.set_value(terminal.scroll_length());
spinbox.on_change = [&terminal](int value) {
terminal.set_scroll_length(value);
};
return window;
}

13
Libraries/LibVT/TerminalWidget.cpp
View file

@ -105,6 +105,7 @@ TerminalWidget::TerminalWidget(int ptm_fd, bool automatic_size_policy, RefPtr<Co
m_scrollbar->on_change = [this](int) {
force_repaint();
};
set_scroll_length(m_config->read_num_entry("Window", "ScrollLength", 1));
dbgprintf("Terminal: Load config file from %s\n", m_config->file_name().characters());
m_cursor_blink_timer->set_interval(m_config->read_num_entry("Text",
@ -672,7 +673,7 @@ void TerminalWidget::mousewheel_event(GUI::MouseEvent& event)
{
if (!is_scrollable())
return;
m_scrollbar->set_value(m_scrollbar->value() + event.wheel_delta());
m_scrollbar->set_value(m_scrollbar->value() + event.wheel_delta() * scroll_length());
GUI::Frame::mousewheel_event(event);
}
@ -681,6 +682,16 @@ bool TerminalWidget::is_scrollable() const
return m_scrollbar->is_scrollable();
}
int TerminalWidget::scroll_length() const
{
return m_scrollbar->step();
}
void TerminalWidget::set_scroll_length(int length)
{
m_scrollbar->set_step(length);
}
String TerminalWidget::selected_text() const
{
StringBuilder builder;

2
Libraries/LibVT/TerminalWidget.h
View file

@ -74,6 +74,8 @@ public:
VT::Position normalized_selection_end() const;
bool is_scrollable() const;
int scroll_length() const;
void set_scroll_length(int);
GUI::Action& copy_action() { return *m_copy_action; }
GUI::Action& paste_action() { return *m_paste_action; }