147 lines
4.6 KiB
C++
147 lines
4.6 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_controls/TextEntry.h>
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#include <vgui/ISystem.h>
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#include <vgui_controls/Controls.h>
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#include <stdio.h>
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using namespace vgui;
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static const int TIMEOUT = 1000; // 1 second timeout
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//-----------------------------------------------------------------------------
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// Text Entry controls are notepad-like windows that hold text.
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// In this demo we create a NON-editable text entry window that holds multiple lines
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// of text. We initialize it with some starting text and add a scroll bar to the
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// window.
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// Then we use a tick function to add some more text to the window every one second.
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// As the window fills with text, the window scrolls vertically.
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// The scroll bar will appear after a few lines and the scroll bar
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// slider will shrink as even more text is added.
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//-----------------------------------------------------------------------------
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class TextEntryDemo4: public DemoPage
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{
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public:
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TextEntryDemo4(Panel *parent, const char *name);
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~TextEntryDemo4();
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void SetVisible(bool state);
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void OnTick();
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private:
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TextEntry *m_pTextEntry;
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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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TextEntryDemo4::TextEntryDemo4(Panel *parent, const char *name) : DemoPage(parent, name)
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{
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m_pTextEntry = new TextEntry(this, "FancyTextEntry");
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// Position the window and make it nice and wide.
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// Make it tall enough to fit several lines of text.
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m_pTextEntry->SetBounds(100, 100, 400, 200);
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// Make this window hold multiple lines of text.
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// This will turn off horizontal scrolling,
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// and wrap text from line to line.
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m_pTextEntry->SetMultiline(true);
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// Add a vertical scroll bar.
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m_pTextEntry->SetVerticalScrollbar(true);
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// Insert text after you have set the size and position of the window
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m_pTextEntry->InsertString("Some starting text and a pile of text. ");
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m_pTextEntry->InsertString("Some more text to make mutiple lines. ");
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m_pTextEntry->InsertString("Even more scrumptious, chocolatey delicious text. ");
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m_pTextEntry->InsertString("Enough text to get that scroll bar a-scrolling. ");
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m_pTextEntry->InsertString("That's it a nice number of chars.\n");
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// This Text window is not editable by the user. It will only display.
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m_pTextEntry->SetEditable(false);
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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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TextEntryDemo4::~TextEntryDemo4()
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{
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}
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//-----------------------------------------------------------------------------
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// Purpose: When the page is shown, initialize the time
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//-----------------------------------------------------------------------------
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void TextEntryDemo4::SetVisible(bool state)
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{
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if (state)
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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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}
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DemoPage::SetVisible(state);
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}
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//-----------------------------------------------------------------------------
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// Purpose: Adds lines to the text entry every second.
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//-----------------------------------------------------------------------------
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void TextEntryDemo4::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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char buf[125];
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sprintf (buf, "Additional Text %d\n", m_iTimeoutTime);
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// Move to the end of the history before we add some new text.
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// Its important to call this and explicitly move to the
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// correct position in case someone clicked in
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// the window (this moves the cursor)
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// If you comment out this line and rerun you will see
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// that if you click in the text window additional
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// text will be added where you clicked.
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m_pTextEntry->GotoTextEnd();
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// Add some text to the text entry window
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m_pTextEntry->InsertString(buf);
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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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}
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}
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Panel* TextEntryDemo4_Create(Panel *parent)
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{
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return new TextEntryDemo4(parent, "TextEntryDemo4");
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}
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