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Diffstat (limited to 'libs/dgl/CairoWidget.hpp')
| -rw-r--r-- | libs/dgl/CairoWidget.hpp | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/libs/dgl/CairoWidget.hpp b/libs/dgl/CairoWidget.hpp deleted file mode 100644 index 9ebfe8f..0000000 --- a/libs/dgl/CairoWidget.hpp +++ /dev/null @@ -1,208 +0,0 @@ -/* - * DISTRHO Plugin Framework (DPF) - * Copyright (C) 2012-2014 Filipe Coelho <falktx@falktx.com> - * - * Permission to use, copy, modify, and/or distribute this software for any purpose with - * or without fee is hereby granted, provided that the above copyright notice and this - * permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD - * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER - * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#ifndef DGL_CAIRO_WIDGET_HPP_INCLUDED -#define DGL_CAIRO_WIDGET_HPP_INCLUDED - -#include "Widget.hpp" - -#include <cairo.h> - -#include <cstdio> - -START_NAMESPACE_DGL - -// ----------------------------------------------------------------------- - -class CairoWidget : public Widget -{ -public: - CairoWidget(Window& parent) - : Widget(parent), - fContext(nullptr), - fSurface(nullptr), - fTextureId(0) - { - } - - virtual void setWidth(int width) override - { - if (fArea.getWidth() == width) - return; - - Widget::setWidth(width); - _recreateSurface(); - } - - virtual void setHeight(int height) override - { - if (fArea.getHeight() == height) - return; - - Widget::setHeight(height); - _recreateSurface(); - } - - virtual void setSize(const Size<int>& size) override - { - if (fArea.getSize() == size) - return; - - Widget::setSize(size); - _recreateSurface(); - } - - void setSize(int width, int height) - { - setSize(Size<int>(width, height)); - } - -protected: - virtual void cairoDisplay(cairo_t* const context) = 0; - -private: - void onDisplay() override - { - // wait for sizing - if (fSurface == nullptr || fContext == nullptr) - { - printf("invalid surface\n"); - return; - } - - if (fTextureId == 0) - glGenTextures(1, &fTextureId); - if (fTextureId == 0) - { - // TODO: invalidate widget - printf("invalid texture\n"); - return; - } - -#if 1 - const int x = getX(); - const int y = getY(); - const int width = getWidth(); - const int height = getHeight(); - - // draw cairo stuff - cairoDisplay(fContext); - - // get cairo surface data (RGB24) - uchar* const surfaceData = cairo_image_surface_get_data(fSurface); - - // enable GL texture - glEnable(GL_TEXTURE_RECTANGLE_ARB); - - // set texture params - glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); - glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); - glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - // bind texture to surface data - glBindTexture(GL_TEXTURE_RECTANGLE_ARB, fTextureId); - glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, surfaceData); - - // draw the texture - -// glBegin(GL_QUADS); -// glTexCoord2f(0.0f, 0.0f); -// glVertex2i(x, y); -// -// glTexCoord2f(1.0f, 0.0f); -// glVertex2i(x+width, y); -// -// glTexCoord2f(1.0f, 1.0f); -// glVertex2i(x+width, y+height); -// -// glTexCoord2f(0.0f, 1.0f); -// glVertex2i(x, y+height); -// glEnd(); - - glBegin(GL_QUADS); - //glTexCoord2i(x, y); - glTexCoord2i(0, 0); - glVertex2i(x, y); - - //glTexCoord2i(x+width, y); - glTexCoord2i(width, 0); - glVertex2i(x+width, y); - - //glTexCoord2i(x+width, y+height); - glTexCoord2i(width, height); - glVertex2i(x+width, y+height); - - //glTexCoord2i(x, y+height); - glTexCoord2i(0, height); - glVertex2i(x, y+height); - glEnd(); - - // cleanup - glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0); - glDisable(GL_TEXTURE_RECTANGLE_ARB); -#endif - } - - void onClose() override - { - if (fContext != nullptr) - { - cairo_destroy(fContext); - fContext = nullptr; - } - - if (fSurface != nullptr) - { - cairo_surface_destroy(fSurface); - fSurface = nullptr; - } - - if (fTextureId != 0) - { - glDeleteTextures(1, &fTextureId); - fTextureId = 0; - } - } - - void _recreateSurface() - { - if (fContext != nullptr) - cairo_destroy(fContext); - - if (fSurface != nullptr) - cairo_surface_destroy(fSurface); - - fSurface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, fArea.getWidth(), fArea.getHeight()); - - if (fSurface != nullptr) - fContext = cairo_create(fSurface); - else - fContext = nullptr; - } - -private: - cairo_t* fContext; - cairo_surface_t* fSurface; - GLuint fTextureId; - - DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(CairoWidget) -}; - -// ----------------------------------------------------------------------- - -END_NAMESPACE_DGL - -#endif // DGL_CAIRO_WIDGET_HPP_INCLUDED |