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                 m_image->setImage(texture);
  50
  51         return result;
  52 }
  53
  54 void GUIButtonImage::setForegroundImage(EGUI_BUTTON_IMAGE_STATE state,
  55                 video::ITexture *image, const core::rect<s32> &sourceRect)
  56 {
  57         if (state >= EGBIS_COUNT)
  58                 return;
  59
  60         if (image)
  61                 image->grab();
  62
  63         u32 stateIdx = (u32)state;
  64         if (m_foreground_images[stateIdx].Texture)
  65                 m_foreground_images[stateIdx].Texture->drop();
  66
  67         m_foreground_images[stateIdx].Texture = image;
  68         m_foreground_images[stateIdx].SourceRect = sourceRect;
  69
  70         EGUI_BUTTON_IMAGE_STATE imageState = getImageState(isPressed(), m_foreground_images);
  71         if (imageState == stateIdx)
  72                 m_image->setImage(image);
  73 }
  74
  75 void GUIButtonImage::setForegroundImage(video::ITexture *image)
  76 {
  77         setForegroundImage(gui::EGBIS_IMAGE_UP, image);
  78 }
  79
  80 void GUIButtonImage::setForegroundImage(video::ITexture *image, const core::rect<s32> &pos)
  81 {
  82         setForegroundImage(gui::EGBIS_IMAGE_UP, image, pos);
  83 }
  84
  85 void GUIButtonImage::setPressedForegroundImage(video::ITexture *image)
  86 {
  87         setForegroundImage(gui::EGBIS_IMAGE_DOWN, image);
  88 }
  89
  90 void GUIButtonImage::setPressedForegroundImage(video::ITexture *image, const core::rect<s32> &pos)
  91 {
  92         setForegroundImage(gui::EGBIS_IMAGE_DOWN, image, pos);
  93 }
  94
  95 void GUIButtonImage::setHoveredForegroundImage(video::ITexture *image)
  96 {
  97         setForegroundImage(gui::EGBIS_IMAGE_UP_MOUSEOVER, image);
  98         setForegroundImage(gui::EGBIS_IMAGE_UP_FOCUSED_MOUSEOVER, image);
  99 }
 100
 101 void GUIButtonImage::setHoveredForegroundImage(video::ITexture *image, const core::rect<s32> &pos)
 102 {
 103         setForegroundImage(gui::EGBIS_IMAGE_UP_MOUSEOVER, image, pos);
 104         setForegroundImage(gui::EGBIS_IMAGE_UP_FOCUSED_MOUSEOVER, image, pos);
 105 }
 106
 107 void GUIButtonImage::setFromStyle(const StyleSpec &style, ISimpleTextureSource *tsrc)
 108 {
 109         GUIButton::setFromStyle(style, tsrc);
 110
 111         video::IVideoDriver *driver = Environment->getVideoDriver();
 112
 113         if (style.isNotDefault(StyleSpec::FGIMG)) {
 114                 video::ITexture *texture = style.getTexture(StyleSpec::FGIMG, tsrc);
 115                 video::ITexture *hovered_texture = style.getTexture(StyleSpec::FGIMG_HOVERED, tsrc, texture);
 116                 video::ITexture *pressed_texture = style.getTexture(StyleSpec::FGIMG_PRESSED, tsrc, texture);
 117
 118                 const core::position2di buttonCenter(AbsoluteRect.getCenter());
 119                 core::position2d<s32> geom(buttonCenter);
 120
 121                 setForegroundImage(guiScalingImageButton(driver, texture, geom.X, geom.Y));
 122                 setHoveredForegroundImage(guiScalingImageButton(driver, hovered_texture, geom.X, geom.Y));
 123                 setPressedForegroundImage(guiScalingImageButton(driver, pressed_texture, geom.X, geom.Y));
 124                 setScaleImage(true);
 125         }
 126 }
 127
 128 void GUIButtonImage::setScaleImage(bool scaleImage)
 129 {
 130         GUIButton::setScaleImage(scaleImage);
 131         m_image->setScaleImage(scaleImage);
 132 }
 133
 134 GUIButtonImage *GUIButtonImage::addButton(IGUIEnvironment *environment,
 135                 const core::rect<s32> &rectangle, IGUIElement *parent, s32 id,
 136                 const wchar_t *text, const wchar_t *tooltiptext)
 137 {
 138         GUIButtonImage *button = new GUIButtonImage(environment,
 139                         parent ? parent : environment->getRootGUIElement(), id, rectangle);
 140
 141         if (text)
 142                 button->setText(text);
 143
 144         if (tooltiptext)
 145                 button->setToolTipText(tooltiptext);
 146
 147         button->drop();
 148         return button;
 149 }