110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "DemoPage.h"
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#include <VGUI/IVGui.h>
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#include <vgui/ISystem.h>
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#include <vgui_controls/Controls.h>
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#include <vgui_controls/ProgressBar.h>
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using namespace vgui;
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static const int TIMEOUT = 5000; // 5 second timeout
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//-----------------------------------------------------------------------------
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// Progress bars are used to illustrate a waiting period (such as
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// connecting to a server.
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// Here we create a progress bar that fills up every 5 seconds.
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//-----------------------------------------------------------------------------
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class ProgressBarDemo: public DemoPage
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{
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public:
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ProgressBarDemo(Panel *parent, const char *name);
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~ProgressBarDemo();
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void OnTick();
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void SetVisible(bool status);
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private:
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ProgressBar *m_pProgressBar;
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int m_iTimeoutTime;
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};
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//-----------------------------------------------------------------------------
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// Purpose: Constructor
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//-----------------------------------------------------------------------------
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ProgressBarDemo::ProgressBarDemo(Panel *parent, const char *name) : DemoPage(parent, name)
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{
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m_pProgressBar = new ProgressBar(this, "AProgressBar");
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m_pProgressBar->SetPos(100, 100);
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m_pProgressBar->SetWide(300);
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// This makes panel receive a 'Tick' message every frame
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// (~50ms, depending on sleep times/framerate)
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// Panel is automatically removed from tick signal list when it's deleted
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ivgui()->AddTickSignal(this->GetVPanel());
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m_iTimeoutTime = 0;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Destructor
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//-----------------------------------------------------------------------------
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ProgressBarDemo::~ProgressBarDemo()
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{
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}
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//-----------------------------------------------------------------------------
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// Purpose: When the page is shown, initialize the progress bar.
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//-----------------------------------------------------------------------------
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void ProgressBarDemo::SetVisible(bool status)
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{
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if (status)
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{
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// Set the timeout time.
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m_iTimeoutTime = system()->GetTimeMillis() + TIMEOUT;
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// Set progress bar to be none of the way done
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m_pProgressBar->SetProgress(0);
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}
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DemoPage::SetVisible(status);
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}
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//-----------------------------------------------------------------------------
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// Purpose: Advances the status bar to the end, then starts over
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//-----------------------------------------------------------------------------
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void ProgressBarDemo::OnTick()
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{
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if (m_iTimeoutTime)
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{
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int currentTime = system()->GetTimeMillis();
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// Check for timeout
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if (currentTime > m_iTimeoutTime)
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{
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// Timed out, make a new timeout time
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m_iTimeoutTime = system()->GetTimeMillis() + TIMEOUT;
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}
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else
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{
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// Advance the status bar, in the range 0% to 100%
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float timePassedPercentage = (float)(currentTime - m_iTimeoutTime + TIMEOUT) / (float)TIMEOUT;
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m_pProgressBar->SetProgress(timePassedPercentage);
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}
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}
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}
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Panel* ProgressBarDemo_Create(Panel *parent)
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{
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return new ProgressBarDemo(parent, "ProgressBarDemo");
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}
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