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Code Issues Projects Releases Packages Wiki Activity Actions 7

Magnifier: Add 8x magnification and pausing

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This adds an option for even more magnification, when you really need to
count pixels, as well as pausing the capture by pressing Space and
switching between magnification levels with keys 2, 4 & 8.
This commit is contained in:
Marcus Nilsson 2021-09-17 22:29:35 +02:00 committed by Andreas Kling
parent 6bdd62b51b
commit 401ea85655
Notes: sideshowbarker 2024-07-18 03:45:10 +09:00 
Author: https://github.com/metmo
Commit: https://github.com/SerenityOS/serenity/commit/401ea85655c
Pull-request: https://github.com/SerenityOS/serenity/pull/10101
3 changed files with 23 additions and 3 deletions
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5
Userland/Applications/Magnifier/MagnifierWidget.cpp
View file

@ -22,13 +22,16 @@ MagnifierWidget::~MagnifierWidget()
void MagnifierWidget::set_scale_factor(int scale_factor)
{
VERIFY(scale_factor == 2 || scale_factor == 4);
VERIFY(scale_factor == 2 || scale_factor == 4 || scale_factor == 8);
m_scale_factor = scale_factor;
update();
}
void MagnifierWidget::sync()
{
if (m_pause_capture)
return;
auto size = frame_inner_rect().size();
Gfx::IntSize grab_size { size.width() / m_scale_factor, size.height() / m_scale_factor };
m_grabbed_bitmap = GUI::WindowServerConnection::the().get_screen_bitmap_around_cursor(grab_size).bitmap();

2
Userland/Applications/Magnifier/MagnifierWidget.h
View file

@ -14,6 +14,7 @@ class MagnifierWidget final : public GUI::Frame {
public:
virtual ~MagnifierWidget();
void set_scale_factor(int scale_factor);
void pause_capture(bool pause) { m_pause_capture = pause; }
private:
MagnifierWidget();
@ -24,4 +25,5 @@ private:
int m_scale_factor { 2 };
RefPtr<Gfx::Bitmap> m_grabbed_bitmap;
bool m_pause_capture { false };
};

19
Userland/Applications/Magnifier/main.cpp
View file

@ -56,24 +56,39 @@ int main(int argc, char** argv)
auto size_action_group = make<GUI::ActionGroup>();
auto two_x_action = GUI::Action::create_checkable(
"&2x", [&](auto&) {
"&2x", { Key_2 }, [&](auto&) {
magnifier.set_scale_factor(2);
});
auto four_x_action = GUI::Action::create_checkable(
"&4x", [&](auto&) {
"&4x", { Key_4 }, [&](auto&) {
magnifier.set_scale_factor(4);
});
auto eight_x_action = GUI::Action::create_checkable(
"&8x", { Key_8 }, [&](auto&) {
magnifier.set_scale_factor(8);
});
auto pause_action = GUI::Action::create_checkable(
"&Pause Capture", { Key_Space }, [&](auto& action) {
magnifier.pause_capture(action.is_checked());
});
size_action_group->add_action(two_x_action);
size_action_group->add_action(four_x_action);
size_action_group->add_action(eight_x_action);
size_action_group->set_exclusive(true);
auto& view_menu = window->add_menu("&View");
view_menu.add_action(two_x_action);
view_menu.add_action(four_x_action);
view_menu.add_action(eight_x_action);
two_x_action->set_checked(true);
view_menu.add_separator();
view_menu.add_action(pause_action);
auto& help_menu = window->add_menu("&Help");
help_menu.add_action(GUI::CommonActions::make_about_action("Magnifier", app_icon, window));