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Screensaver: Draw screen before first timer iteration and seed srand()

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Brendan Coles 2020-04-28 00:00:44 +00:00 committed by Andreas Kling
parent 8f2300afb5
commit 24b9e57b15
Notes: sideshowbarker 2024-07-19 07:14:32 +09:00 
Author: https://github.com/bcoles
Commit: https://github.com/SerenityOS/serenity/commit/24b9e57b150
Pull-request: https://github.com/SerenityOS/serenity/pull/1983
Reviewed-by: https://github.com/awesomekling
1 changed files with 10 additions and 3 deletions
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13
Demos/Screensaver/Screensaver.cpp
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@ -26,13 +26,13 @@
#include <LibCore/ElapsedTimer.h>
#include <LibGfx/Bitmap.h>
#include <LibGUI/Application.h>
#include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/Event.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Widget.h>
#include <LibGUI/Window.h>
#include <math.h>
#include <time.h>
#include <stdio.h>
#define WIDTH 64
@ -48,6 +48,7 @@ private:
Screensaver();
RefPtr<Gfx::Bitmap> m_bitmap;
void draw();
virtual void paint_event(GUI::PaintEvent&) override;
virtual void timer_event(Core::TimerEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override;
@ -58,8 +59,10 @@ private:
Screensaver::Screensaver()
{
m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, { WIDTH, HEIGHT });
srand(time(nullptr));
stop_timer();
start_timer(INTERVAL);
draw();
}
Screensaver::~Screensaver()
@ -75,6 +78,7 @@ void Screensaver::mousedown_event(GUI::MouseEvent&)
{
::exit(0);
}
void Screensaver::keydown_event(GUI::KeyEvent&)
{
::exit(0);
@ -90,7 +94,11 @@ void Screensaver::timer_event(Core::TimerEvent&)
{
Core::ElapsedTimer timer;
timer.start();
draw();
}
void Screensaver::draw()
{
const Color colors[] {
Color::Blue,
Color::Cyan,
@ -106,7 +114,6 @@ void Screensaver::timer_event(Core::TimerEvent&)
Gfx::Orientation::Vertical
};
int start_color_index = 0;
int end_color_index = 0;
while (start_color_index == end_color_index) {