137 lines
3.8 KiB
C++
137 lines
3.8 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/Controls.h"
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#include "tier1/KeyValues.h"
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#include <vgui_controls/Button.h>
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#include <vgui_controls/ComboBox.h>
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using namespace vgui;
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// Combo boxes are boxes that display text and have a menu attached.
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// Selecting an item from the menu changes the displayed text in the box.
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class ComboBox2Demo: public DemoPage
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{
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DECLARE_CLASS_SIMPLE( ComboBox2Demo, DemoPage );
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public:
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ComboBox2Demo(Panel *parent, const char *name);
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~ComboBox2Demo();
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void OnButtonClicked();
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void AddItemToComboBoxMenu();
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private:
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Button *m_pButton;
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ComboBox *m_pComboBox;
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DECLARE_PANELMAP();
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};
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//-----------------------------------------------------------------------------
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// Purpose: Constructor
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//-----------------------------------------------------------------------------
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ComboBox2Demo::ComboBox2Demo(Panel *parent, const char *name) : DemoPage(parent, name)
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{
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// Create a new combo box.
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// The first arg is the parent, the second the name
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// The third arg is the number of items that will be in the menu
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// In settin this arg to 4, if we add more than 4 items to the menu
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// a scroll bar will be enabled.
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// The fourth arg is if the box is editable or not, this time we set it to true.
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m_pComboBox = new ComboBox(this, "Directions", 6, true);
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// Position the box.
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m_pComboBox->SetPos(100, 100);
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// Set the width of the Combo box so any element selected will display nicely.
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m_pComboBox->SetWide(150);
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// Add some text selections to the menu list
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m_pComboBox->AddItem("Right", NULL );
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m_pComboBox->AddItem("Left", NULL );
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m_pComboBox->AddItem("Up", NULL );
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m_pComboBox->AddItem("Down", NULL );
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m_pComboBox->AddItem("Forward", NULL );
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m_pComboBox->AddItem("Backward", NULL );
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m_pComboBox->AddItem("Backward and really long", NULL );
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// Create a button. Clicking this button will send a command back to us.
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// In response to this command we will get the contents of the combo box
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// and add it to the list of items in the list.
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m_pButton = new Button (this, "AButton", "Click to add an item name to the menu");
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m_pButton->SizeToContents();
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m_pButton->SetPos(270, 100);
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// Install a command that will be executed when the button is pressed
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m_pButton->SetCommand(new KeyValues ("ButtonClicked"));
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}
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//-----------------------------------------------------------------------------
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// Purpose: Destructor
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//-----------------------------------------------------------------------------
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ComboBox2Demo::~ComboBox2Demo()
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{
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}
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//-----------------------------------------------------------------------------
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// Purpose: Respond to a message based action signal
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//-----------------------------------------------------------------------------
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void ComboBox2Demo::OnButtonClicked()
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{
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ivgui()->DPrintf("Button was clicked.\n");
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// Lets check out what's in the combo box and add it to the menu.
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AddItemToComboBoxMenu();
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}
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void ComboBox2Demo::AddItemToComboBoxMenu()
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{
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char boxText[128];
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// Get the text from the combo box
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m_pComboBox->GetText(boxText, sizeof( boxText ) );
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// We won't add empty text strings to the menu.
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if (!strcmp(boxText, ""))
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return;
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// Add this item to the combo box menu
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// If you wanted to check for uniqueness you would have to keep a
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// list of the items in the menu and check it.
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m_pComboBox->AddItem(boxText, NULL);
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// Reset the combo box to empty
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m_pComboBox->SetText("");
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}
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MessageMapItem_t ComboBox2Demo::m_MessageMap[] =
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{
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MAP_MESSAGE( ComboBox2Demo, "ButtonClicked", OnButtonClicked ),
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};
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IMPLEMENT_PANELMAP(ComboBox2Demo, BaseClass);
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Panel* ComboBox2Demo_Create(Panel *parent)
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{
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return new ComboBox2Demo(parent, "ComboBox2Demo");
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}
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