d87d100166
modalscreens now resize to fit parent. updated meshviewer example to lock the image to the bottom left corner. tooltips: added EGDC_TOOLTIP_BACKGROUND to skins. changed the position of tooltips and their time between creation to 500ms. made sure that they do not leave the area of the gui environment. new method: rect::constrainTo to forcing one rectangle to stay inside another. git-svn-id: http://svn.code.sf.net/p/irrlicht/code/trunk@697 dfc29bdd-3216-0410-991c-e03cc46cb475
453 lines
11 KiB
C++
453 lines
11 KiB
C++
// Copyright (C) 2002-2007 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CGUIButton.h"
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#include "IGUISkin.h"
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#include "IGUIEnvironment.h"
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#include "IVideoDriver.h"
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#include "IGUIFont.h"
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#include "os.h"
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namespace irr
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{
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namespace gui
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{
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//! constructor
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CGUIButton::CGUIButton(IGUIEnvironment* environment, IGUIElement* parent,
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s32 id, core::rect<s32> rectangle, bool noclip)
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: IGUIButton(environment, parent, id, rectangle), Pressed(false),
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IsPushButton(false), UseAlphaChannel(false), Border(true),
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MouseOverTime(0), FocusTime(0), ClickTime(0), SpriteBank(0),
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OverrideFont(0), Image(0), PressedImage(0)
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{
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#ifdef _DEBUG
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setDebugName("CGUIButton");
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#endif
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setNotClipped(noclip);
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// reset sprites
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for (u32 i=0; i<EGBS_COUNT; ++i)
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ButtonSprites[i].Index = -1;
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}
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//! destructor
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CGUIButton::~CGUIButton()
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{
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if (OverrideFont)
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OverrideFont->drop();
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if (Image)
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Image->drop();
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if (PressedImage)
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PressedImage->drop();
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if (SpriteBank)
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SpriteBank->drop();
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}
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//! Sets if the button should use the skin to draw its border
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void CGUIButton::setDrawBorder(bool border)
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{
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Border = border;
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}
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void CGUIButton::setSpriteBank(IGUISpriteBank* sprites)
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{
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if (sprites)
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sprites->grab();
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if (SpriteBank)
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SpriteBank->drop();
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SpriteBank = sprites;
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}
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void CGUIButton::setSprite(EGUI_BUTTON_STATE state, s32 index, video::SColor color, bool loop)
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{
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if (SpriteBank)
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{
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ButtonSprites[(u32)state].Index = index;
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ButtonSprites[(u32)state].Color = color;
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ButtonSprites[(u32)state].Loop = loop;
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}
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else
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{
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ButtonSprites[(u32)state].Index = -1;
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}
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}
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//! called if an event happened.
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bool CGUIButton::OnEvent(SEvent event)
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{
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if (!IsEnabled)
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return Parent ? Parent->OnEvent(event) : false;
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switch(event.EventType)
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{
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case EET_KEY_INPUT_EVENT:
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if (event.KeyInput.PressedDown &&
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(event.KeyInput.Key == KEY_RETURN ||
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event.KeyInput.Key == KEY_SPACE))
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{
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if (!IsPushButton)
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setPressed(true);
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else
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setPressed(!Pressed);
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return true;
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}
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else
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if (!event.KeyInput.PressedDown && Pressed &&
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(event.KeyInput.Key == KEY_RETURN ||
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event.KeyInput.Key == KEY_SPACE))
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{
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Environment->removeFocus(this);
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if (!IsPushButton)
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setPressed(false);
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if (Parent)
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{
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SEvent newEvent;
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newEvent.EventType = EET_GUI_EVENT;
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newEvent.GUIEvent.Caller = this;
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newEvent.GUIEvent.EventType = EGET_BUTTON_CLICKED;
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Parent->OnEvent(newEvent);
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}
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return true;
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}
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break;
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case EET_GUI_EVENT:
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if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)
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{
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if (event.GUIEvent.Caller == (IGUIElement*) this && !IsPushButton)
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setPressed(false);
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}
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break;
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case EET_MOUSE_INPUT_EVENT:
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if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
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{
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if (Environment->hasFocus(this) &&
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!AbsoluteClippingRect.isPointInside(core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y)))
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{
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Environment->removeFocus(this);
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return false;
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}
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if (!IsPushButton)
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setPressed(true);
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Environment->setFocus(this);
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return true;
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}
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else
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if (event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP)
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{
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bool wasPressed = Pressed;
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Environment->removeFocus(this);
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if ( !AbsoluteClippingRect.isPointInside( core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y ) ) )
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{
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if (!IsPushButton)
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setPressed(false);
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return true;
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}
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if (!IsPushButton)
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setPressed(false);
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else
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{
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setPressed(!Pressed);
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}
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if ((!IsPushButton && wasPressed && Parent) ||
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(IsPushButton && wasPressed != Pressed))
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{
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SEvent newEvent;
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newEvent.EventType = EET_GUI_EVENT;
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newEvent.GUIEvent.Caller = this;
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newEvent.GUIEvent.EventType = EGET_BUTTON_CLICKED;
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Parent->OnEvent(newEvent);
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}
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return true;
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}
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break;
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}
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return Parent ? Parent->OnEvent(event) : false;
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}
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//! draws the element and its children
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void CGUIButton::draw()
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{
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if (!IsVisible)
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return;
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IGUISkin* skin = Environment->getSkin();
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irr::video::IVideoDriver* driver = Environment->getVideoDriver();
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IGUIFont* font = OverrideFont;
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if (!OverrideFont)
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font = skin->getFont(EGDF_BUTTON);
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core::rect<s32> rect = AbsoluteRect;
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// todo: move sprite up and text down if the pressed state has a sprite
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// draw sprites for focused and mouse-over
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core::position2di spritePos = AbsoluteRect.getCenter();
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if (!Pressed)
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{
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if (Border)
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skin->draw3DButtonPaneStandard(this, rect, &AbsoluteClippingRect);
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if (Image)
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{
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core::position2d<s32> pos = AbsoluteRect.getCenter();
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pos.X -= ImageRect.getWidth() / 2;
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pos.Y -= ImageRect.getHeight() / 2;
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driver->draw2DImage(Image, pos, ImageRect, &AbsoluteClippingRect,
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video::SColor(255,255,255,255), UseAlphaChannel);
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}
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if (SpriteBank && ButtonSprites[EGBS_BUTTON_UP].Index != -1)
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{
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// draw pressed sprite
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SpriteBank->draw2DSprite(ButtonSprites[EGBS_BUTTON_UP].Index, spritePos,
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&AbsoluteClippingRect, ButtonSprites[EGBS_BUTTON_UP].Color, ClickTime, os::Timer::getTime(),
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ButtonSprites[EGBS_BUTTON_UP].Loop, true);
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}
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}
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else
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{
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if (Border)
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skin->draw3DButtonPanePressed(this, rect, &AbsoluteClippingRect);
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if (PressedImage)
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{
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core::position2d<s32> pos = AbsoluteRect.getCenter();
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pos.X -= PressedImageRect.getWidth() / 2;
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pos.Y -= PressedImageRect.getHeight() / 2;
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// patch by Alan Tyndall/Jonas Petersen
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if (Image == PressedImage)
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{
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pos.X += 1;
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pos.Y += 1;
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}
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driver->draw2DImage(PressedImage, pos, PressedImageRect, &AbsoluteClippingRect,
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video::SColor(255,255,255,255), UseAlphaChannel);
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}
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if (SpriteBank && ButtonSprites[EGBS_BUTTON_DOWN].Index != -1)
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{
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// draw sprite
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SpriteBank->draw2DSprite(ButtonSprites[EGBS_BUTTON_DOWN].Index, spritePos,
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&AbsoluteClippingRect, ButtonSprites[EGBS_BUTTON_DOWN].Color, ClickTime, os::Timer::getTime(),
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ButtonSprites[EGBS_BUTTON_DOWN].Loop, true);
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}
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}
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if (Text.size())
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{
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rect = AbsoluteRect;
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if (Pressed)
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rect.UpperLeftCorner.Y += 2;
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if (font)
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font->draw(Text.c_str(), rect,
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skin->getColor(IsEnabled ? EGDC_BUTTON_TEXT : EGDC_GRAY_TEXT), true, true,
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&AbsoluteClippingRect);
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}
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IGUIElement::draw();
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}
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//! sets another skin independent font. if this is set to zero, the button uses the font of the skin.
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void CGUIButton::setOverrideFont(IGUIFont* font)
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{
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if (OverrideFont)
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OverrideFont->drop();
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OverrideFont = font;
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if (OverrideFont)
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OverrideFont->grab();
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}
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//! Sets an image which should be displayed on the button when it is in normal state.
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void CGUIButton::setImage(video::ITexture* image)
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{
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if (Image)
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Image->drop();
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Image = image;
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if (image)
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ImageRect = core::rect<s32>(core::position2d<s32>(0,0), image->getSize());
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if (Image)
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Image->grab();
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if (!PressedImage)
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setPressedImage(Image);
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}
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//! Sets an image which should be displayed on the button when it is in normal state.
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void CGUIButton::setImage(video::ITexture* image, const core::rect<s32>& pos)
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{
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if (Image)
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Image->drop();
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Image = image;
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ImageRect = pos;
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if (Image)
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Image->grab();
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if (!PressedImage)
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setPressedImage(Image, pos);
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}
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//! Sets an image which should be displayed on the button when it is in pressed state.
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void CGUIButton::setPressedImage(video::ITexture* image)
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{
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if (PressedImage)
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PressedImage->drop();
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PressedImage = image;
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if (image)
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PressedImageRect = core::rect<s32>(core::position2d<s32>(0,0), image->getSize());
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if (PressedImage)
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PressedImage->grab();
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}
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//! Sets an image which should be displayed on the button when it is in pressed state.
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void CGUIButton::setPressedImage(video::ITexture* image, const core::rect<s32>& pos)
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{
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if (PressedImage)
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PressedImage->drop();
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PressedImage = image;
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PressedImageRect = pos;
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if (PressedImage)
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PressedImage->grab();
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}
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//! Sets if the button should behave like a push button. Which means it
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//! can be in two states: Normal or Pressed. With a click on the button,
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//! the user can change the state of the button.
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void CGUIButton::setIsPushButton(bool isPushButton)
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{
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IsPushButton = isPushButton;
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}
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//! Returns if the button is currently pressed
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bool CGUIButton::isPressed()
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return Pressed;
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}
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//! Sets the pressed state of the button if this is a pushbutton
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void CGUIButton::setPressed(bool pressed)
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{
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if (Pressed != pressed)
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{
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ClickTime = os::Timer::getTime();
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Pressed = pressed;
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}
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}
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//! Returns whether the button is a push button
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bool CGUIButton::isPushButton()
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return IsPushButton;
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}
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//! Sets if the alpha channel should be used for drawing images on the button (default is false)
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void CGUIButton::setUseAlphaChannel(bool useAlphaChannel)
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{
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UseAlphaChannel = useAlphaChannel;
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}
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//! Returns if the alpha channel should be used for drawing images on the button
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bool CGUIButton::isAlphaChannelUsed()
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return UseAlphaChannel;
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}
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bool CGUIButton::isDrawingBorder()
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{
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return Border;
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}
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//! Writes attributes of the element.
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void CGUIButton::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0)
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{
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IGUIButton::serializeAttributes(out,options);
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out->addBool ("PushButton", IsPushButton );
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if (IsPushButton)
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out->addBool ("Pressed", Pressed);
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out->addTexture ("Image", Image);
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out->addRect ("ImageRect", ImageRect);
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out->addTexture ("PressedImage", PressedImage);
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out->addRect ("PressedImageRect",PressedImageRect);
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out->addBool ("Border", Border);
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out->addBool ("UseAlphaChannel", UseAlphaChannel);
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// out->addString ("OverrideFont", OverrideFont);
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}
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//! Reads attributes of the element
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void CGUIButton::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
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{
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IGUIButton::deserializeAttributes(in,options);
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IsPushButton = in->getAttributeAsBool("PushButton");
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Pressed = IsPushButton ? in->getAttributeAsBool("Pressed") : false;
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core::rect<s32> rec = in->getAttributeAsRect("ImageRect");
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if (rec.isValid())
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setImage( in->getAttributeAsTexture("Image"), rec);
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else
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setImage( in->getAttributeAsTexture("Image") );
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rec = in->getAttributeAsRect("PressedImageRect");
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if (rec.isValid())
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setPressedImage( in->getAttributeAsTexture("PressedImage"), rec);
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else
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setPressedImage( in->getAttributeAsTexture("PressedImage") );
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setDrawBorder(in->getAttributeAsBool("Border"));
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UseAlphaChannel = in->getAttributeAsBool("UseAlphaChannel");
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// setOverrideFont(in->getAttributeAsString("OverrideFont"));
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updateAbsolutePosition();
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}
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} // end namespace gui
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} // end namespace irr
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