source/Irrlicht/CGUIImage.h

   1 // Copyright (C) 2002-2012 Nikolaus Gebhardt\r
   2 // This file is part of the "Irrlicht Engine".\r
   3 // For conditions of distribution and use, see copyright notice in irrlicht.h\r
   4 \r
   5 #ifndef __C_GUI_IMAGE_H_INCLUDED__\r
   6 #define __C_GUI_IMAGE_H_INCLUDED__\r
   7 \r
   8 #include "IGUIImage.h"\r
   9 \r
  10 namespace irr\r
  11 {\r
  12 namespace gui\r
  13 {\r
  14 \r
  15         class CGUIImage : public IGUIImage\r
  16         {\r
  17         public:\r
  18 \r
  19                 //! constructor\r
  20                 CGUIImage(IGUIEnvironment* environment, IGUIElement* parent, s32 id, core::rect<s32> rectangle);\r
  21 \r
  22                 //! destructor\r
  23                 virtual ~CGUIImage();\r
  24 \r
  25                 //! sets an image\r
  26                 void setImage(video::ITexture* image) override;\r
  27 \r
  28                 //! Gets the image texture\r
  29                 video::ITexture* getImage() const override;\r
  30 \r
  31                 //! sets the color of the image\r
  32                 void setColor(video::SColor color) override;\r
  33 \r
  34                 //! sets if the image should scale to fit the element\r
  35                 void setScaleImage(bool scale) override;\r
  36 \r
  37                 //! draws the element and its children\r
  38                 void draw() override;\r
  39 \r
  40                 //! sets if the image should use its alpha channel to draw itself\r
  41                 void setUseAlphaChannel(bool use) override;\r
  42 \r
  43                 //! Gets the color of the image\r
  44                 video::SColor getColor() const override;\r
  45 \r
  46                 //! Returns true if the image is scaled to fit, false if not\r
  47                 bool isImageScaled() const override;\r
  48 \r
  49                 //! Returns true if the image is using the alpha channel, false if not\r
  50                 bool isAlphaChannelUsed() const override;\r
  51 \r
  52                 //! Sets the source rectangle of the image. By default the full image is used.\r
  53                 void setSourceRect(const core::rect<s32>& sourceRect) override;\r
  54 \r
  55                 //! Returns the customized source rectangle of the image to be used.\r
  56                 core::rect<s32> getSourceRect() const override;\r
  57 \r
  58                 //! Restrict drawing-area.\r
  59                 void setDrawBounds(const core::rect<f32>& drawBoundUVs) override;\r
  60 \r
  61                 //! Get drawing-area restrictions.\r
  62                 core::rect<f32> getDrawBounds() const override;\r
  63 \r
  64                 //! Sets whether to draw a background color (EGDC_3D_DARK_SHADOW) when no texture is set\r
  65                 void setDrawBackground(bool draw) override\r
  66                 {\r
  67                         DrawBackground = draw;\r
  68                 }\r
  69 \r
  70                 //! Checks if a background is drawn when no texture is set\r
  71                 bool isDrawBackgroundEnabled() const  override\r
  72                 {\r
  73                         return DrawBackground;\r
  74                 }\r
  75 \r
  76         protected:\r
  77                 void checkBounds(core::rect<s32>& rect)\r
  78                 {\r
  79                         f32 clipWidth = (f32)rect.getWidth();\r
  80                         f32 clipHeight = (f32)rect.getHeight();\r
  81 \r
  82                         rect.UpperLeftCorner.X += core::round32(DrawBounds.UpperLeftCorner.X*clipWidth);\r
  83                         rect.UpperLeftCorner.Y += core::round32(DrawBounds.UpperLeftCorner.Y*clipHeight);\r
  84                         rect.LowerRightCorner.X -= core::round32((1.f-DrawBounds.LowerRightCorner.X)*clipWidth);\r
  85                         rect.LowerRightCorner.Y -= core::round32((1.f-DrawBounds.LowerRightCorner.Y)*clipHeight);\r
  86                 }\r
  87 \r
  88         private:\r
  89                 video::ITexture* Texture;\r
  90                 video::SColor Color;\r
  91                 bool UseAlphaChannel;\r
  92                 bool ScaleImage;\r
  93                 core::rect<s32> SourceRect;\r
  94                 core::rect<f32> DrawBounds;\r
  95                 bool DrawBackground;\r
  96         };\r
  97 \r
  98 \r
  99 } // end namespace gui\r
 100 } // end namespace irr\r
 101 \r
 102 #endif // __C_GUI_IMAGE_H_INCLUDED__\r