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Code Issues Activity Actions

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

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This commit is contained in:
Brendan Coles 2020-04-28 00:00:44 +00:00 • committed by Andreas Kling
parent 8f2300afb5
commit 24b9e57b15
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 <LibCore/ElapsedTimer.h>
#include <LibGfx/Bitmap.h> #include <LibGfx/Bitmap.h>
#include <LibGUI/Application.h>
#include <LibGUI/Action.h> #include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/Event.h> #include <LibGUI/Event.h>
#include <LibGUI/Painter.h> #include <LibGUI/Painter.h>
#include <LibGUI/Widget.h> #include <LibGUI/Widget.h>
#include <LibGUI/Window.h> #include <LibGUI/Window.h>
#include <math.h> #include <time.h>
#include <stdio.h> #include <stdio.h>
#define WIDTH 64 #define WIDTH 64
@ -48,6 +48,7 @@ private:
Screensaver(); Screensaver();
RefPtr<Gfx::Bitmap> m_bitmap; RefPtr<Gfx::Bitmap> m_bitmap;
void draw();
virtual void paint_event(GUI::PaintEvent&) override; virtual void paint_event(GUI::PaintEvent&) override;
virtual void timer_event(Core::TimerEvent&) override; virtual void timer_event(Core::TimerEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override; virtual void keydown_event(GUI::KeyEvent&) override;
@ -58,8 +59,10 @@ private:
Screensaver::Screensaver() Screensaver::Screensaver()
{ {
m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, { WIDTH, HEIGHT }); m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, { WIDTH, HEIGHT });
srand(time(nullptr));
stop_timer(); stop_timer();
start_timer(INTERVAL); start_timer(INTERVAL);
draw();
} }
Screensaver::~Screensaver() Screensaver::~Screensaver()
@ -75,6 +78,7 @@ void Screensaver::mousedown_event(GUI::MouseEvent&)
{ {
::exit(0); ::exit(0);
} }
void Screensaver::keydown_event(GUI::KeyEvent&) void Screensaver::keydown_event(GUI::KeyEvent&)
{ {
::exit(0); ::exit(0);
@ -90,7 +94,11 @@ void Screensaver::timer_event(Core::TimerEvent&)
{ {
Core::ElapsedTimer timer; Core::ElapsedTimer timer;
timer.start(); timer.start();
draw();
}
void Screensaver::draw()
{
const Color colors[] { const Color colors[] {
Color::Blue, Color::Blue,
Color::Cyan, Color::Cyan,
@ -106,7 +114,6 @@ void Screensaver::timer_event(Core::TimerEvent&)
Gfx::Orientation::Vertical Gfx::Orientation::Vertical
}; };
int start_color_index = 0; int start_color_index = 0;
int end_color_index = 0; int end_color_index = 0;
while (start_color_index == end_color_index) { while (start_color_index == end_color_index) {