src/gui/guiButtonImage.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "guiButtonImage.h"
  21
  22 #include "client/guiscalingfilter.h"
  23 #include "debug.h"
  24 #include "IGUIEnvironment.h"
  25 #include "IGUIImage.h"
  26 #include "IVideoDriver.h"
  27 #include "StyleSpec.h"
  28
  29 using namespace irr;
  30 using namespace gui;
  31
  32 GUIButtonImage::GUIButtonImage(gui::IGUIEnvironment *environment,
  33                 gui::IGUIElement *parent, s32 id, core::rect<s32> rectangle, bool noclip)
  34         : GUIButton (environment, parent, id, rectangle, noclip)
  35 {
  36         m_image = Environment->addImage(
  37                         core::rect<s32>(0,0,rectangle.getWidth(),rectangle.getHeight()), this);
  38         m_image->setScaleImage(isScalingImage());
  39         sendToBack(m_image);
  40 }
  41
  42 bool GUIButtonImage::OnEvent(const SEvent& event)
  43 {
  44         bool result = GUIButton::OnEvent(event);
  45
  46         EGUI_BUTTON_IMAGE_STATE imageState = getImageState(isPressed(), m_foreground_images);
  47         video::ITexture *texture = m_foreground_images[(u32)imageState].Texture;
  48         if (texture != nullptr)
  49         {
  50                 m_image->setImage(texture);
  51         }
  52
  53         m_image->setVisible(texture != nullptr);
  54
  55         return result;
  56 }
  57
  58 void GUIButtonImage::setForegroundImage(EGUI_BUTTON_IMAGE_STATE state,
  59                 video::ITexture *image, const core::rect<s32> &sourceRect)
  60 {
  61         if (state >= EGBIS_COUNT)
  62                 return;
  63
  64         if (image)
  65                 image->grab();
  66
  67         u32 stateIdx = (u32)state;
  68         if (m_foreground_images[stateIdx].Texture)
  69                 m_foreground_images[stateIdx].Texture->drop();
  70
  71         m_foreground_images[stateIdx].Texture = image;
  72         m_foreground_images[stateIdx].SourceRect = sourceRect;
  73
  74         EGUI_BUTTON_IMAGE_STATE imageState = getImageState(isPressed(), m_foreground_images);
  75         if (imageState == stateIdx)
  76                 m_image->setImage(image);
  77 }
  78
  79 void GUIButtonImage::setForegroundImage(video::ITexture *image)
  80 {
  81         setForegroundImage(gui::EGBIS_IMAGE_UP, image);
  82 }
  83
  84 void GUIButtonImage::setForegroundImage(video::ITexture *image, const core::rect<s32> &pos)
  85 {
  86         setForegroundImage(gui::EGBIS_IMAGE_UP, image, pos);
  87 }
  88
  89 void GUIButtonImage::setPressedForegroundImage(video::ITexture *image)
  90 {
  91         setForegroundImage(gui::EGBIS_IMAGE_DOWN, image);
  92 }
  93
  94 void GUIButtonImage::setPressedForegroundImage(video::ITexture *image, const core::rect<s32> &pos)
  95 {
  96         setForegroundImage(gui::EGBIS_IMAGE_DOWN, image, pos);
  97 }
  98
  99 void GUIButtonImage::setHoveredForegroundImage(video::ITexture *image)
 100 {
 101         setForegroundImage(gui::EGBIS_IMAGE_UP_MOUSEOVER, image);
 102         setForegroundImage(gui::EGBIS_IMAGE_UP_FOCUSED_MOUSEOVER, image);
 103 }
 104
 105 void GUIButtonImage::setHoveredForegroundImage(video::ITexture *image, const core::rect<s32> &pos)
 106 {
 107         setForegroundImage(gui::EGBIS_IMAGE_UP_MOUSEOVER, image, pos);
 108         setForegroundImage(gui::EGBIS_IMAGE_UP_FOCUSED_MOUSEOVER, image, pos);
 109 }
 110
 111 void GUIButtonImage::setFromStyle(const StyleSpec &style, ISimpleTextureSource *tsrc)
 112 {
 113         GUIButton::setFromStyle(style, tsrc);
 114
 115         video::IVideoDriver *driver = Environment->getVideoDriver();
 116
 117         const core::position2di buttonCenter(AbsoluteRect.getCenter());
 118         core::position2d<s32> geom(buttonCenter);
 119         if (style.isNotDefault(StyleSpec::FGIMG)) {
 120                 video::ITexture *texture = style.getTexture(StyleSpec::FGIMG, tsrc);
 121
 122                 setForegroundImage(guiScalingImageButton(driver, texture, geom.X, geom.Y));
 123                 setScaleImage(true);
 124         }
 125         if (style.isNotDefault(StyleSpec::FGIMG_HOVERED)) {
 126                 video::ITexture *hovered_texture = style.getTexture(StyleSpec::FGIMG_HOVERED, tsrc);
 127
 128                 setHoveredForegroundImage(guiScalingImageButton(driver, hovered_texture, geom.X, geom.Y));
 129                 setScaleImage(true);
 130         }
 131         if (style.isNotDefault(StyleSpec::FGIMG_PRESSED)) {
 132                 video::ITexture *pressed_texture = style.getTexture(StyleSpec::FGIMG_PRESSED, tsrc);
 133
 134                 setPressedForegroundImage(guiScalingImageButton(driver, pressed_texture, geom.X, geom.Y));
 135                 setScaleImage(true);
 136         }
 137 }
 138
 139 void GUIButtonImage::setScaleImage(bool scaleImage)
 140 {
 141         GUIButton::setScaleImage(scaleImage);
 142         m_image->setScaleImage(scaleImage);
 143 }
 144
 145 GUIButtonImage *GUIButtonImage::addButton(IGUIEnvironment *environment,
 146                 const core::rect<s32> &rectangle, IGUIElement *parent, s32 id,
 147                 const wchar_t *text, const wchar_t *tooltiptext)
 148 {
 149         GUIButtonImage *button = new GUIButtonImage(environment,
 150                         parent ? parent : environment->getRootGUIElement(), id, rectangle);
 151
 152         if (text)
 153                 button->setText(text);
 154
 155         if (tooltiptext)
 156                 button->setToolTipText(tooltiptext);
 157
 158         button->drop();
 159         return button;
 160 }