implemented addTextOpenGl under Gtk
This commit is contained in:
Vladislav Vinogradov
parent
07debd6cb5
commit
0403746636
@ -398,6 +398,217 @@ typedef struct CvTrackbar
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}
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CvTrackbar;
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// OpenGL support
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#ifdef HAVE_OPENGL
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namespace
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{
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class OpenGlFont
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{
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public:
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OpenGlFont(const std::string& fontName, int fontHeight, int fontWeight, int fontStyle);
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~OpenGlFont();
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void draw(const char* str, int len, CvPoint org, CvScalar color, int width, int height) const;
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inline const std::string& fontName() const { return fontName_; }
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inline int fontHeight() const { return fontHeight_; }
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inline int fontWeight() const { return fontWeight_; }
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inline int fontStyle() const { return fontStyle_; }
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private:
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std::string fontName_;
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int fontHeight_;
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int fontWeight_;
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int fontStyle_;
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GLuint base_;
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OpenGlFont(const OpenGlFont&);
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OpenGlFont& operator =(const OpenGlFont&);
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};
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PangoWeight getFontWidthPango(int fontWeight)
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{
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PangoWeight weight;
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switch(fontWeight)
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{
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case CV_FONT_LIGHT:
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weight = PANGO_WEIGHT_LIGHT;
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break;
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case CV_FONT_NORMAL:
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weight = PANGO_WEIGHT_NORMAL;
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break;
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case CV_FONT_DEMIBOLD:
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weight = PANGO_WEIGHT_SEMIBOLD;
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break;
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case CV_FONT_BOLD:
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weight = PANGO_WEIGHT_BOLD;
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break;
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case CV_FONT_BLACK:
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weight = PANGO_WEIGHT_ULTRABOLD;
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break;
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default:
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cvError(CV_StsBadArg, "getFontWidthPango", "Unsopported font width", __FILE__, __LINE__);
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};
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return weight;
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}
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OpenGlFont::OpenGlFont(const std::string& fontName, int fontHeight, int fontWeight, int fontStyle)
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: fontName_(), fontHeight_(0), fontWeight_(0), fontStyle_(0), base_(0)
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{
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base_ = glGenLists(96);
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PangoFontDescription* fontDecr = pango_font_description_new();
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pango_font_description_set_size(fontDecr, fontHeight);
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pango_font_description_set_family_static(fontDecr, fontName.c_str());
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pango_font_description_set_weight(fontDecr, getFontWidthPango(fontWeight));
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PangoStyle pangoStyle = fontStyle & CV_STYLE_ITALIC ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL;
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pango_font_description_set_style(fontDecr, pangoStyle);
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PangoFont* pangoFont = gdk_gl_font_use_pango_font(fontDecr, 32, 96, base_);
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if (!pangoFont)
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cvError(CV_OpenGlApiCallError, "OpenGlFont", "Can't create font", __FILE__, __LINE__);
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pango_font_description_free(fontDecr);
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fontName_ = fontName;
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fontHeight_ = fontHeight;
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fontWeight_ = fontWeight;
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fontStyle_ = fontStyle;
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}
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OpenGlFont::~OpenGlFont()
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{
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if (base_)
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glDeleteLists(base_, 96);
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}
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void OpenGlFont::draw(const char* str, int len, CvPoint org, CvScalar color, int width, int height) const
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{
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if (base_)
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{
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glPushAttrib(GL_LIST_BIT);
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glListBase(base_ - 32);
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glColor4dv(color.val);
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glRasterPos2f(static_cast<float>(org.x) / width, static_cast<float>((org.y + fontHeight_)) / height);
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glCallLists(len, GL_UNSIGNED_BYTE, str);
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glPopAttrib();
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CV_CheckGlError();
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}
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}
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class OpenGlText
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{
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public:
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OpenGlText();
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void add(const std::string& text, CvPoint org, CvScalar color, const std::string& fontName, int fontHeight, int fontWeight, int fontStyle);
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inline void clear() { text_.clear(); }
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void draw(int width, int height) const;
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private:
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struct Text
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{
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std::string str;
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CvPoint org;
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CvScalar color;
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cv::Ptr<OpenGlFont> font;
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};
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std::vector< cv::Ptr<OpenGlFont> > fonts_;
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std::vector<Text> text_;
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};
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OpenGlText::OpenGlText()
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{
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fonts_.reserve(5);
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text_.reserve(5);
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}
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class FontCompare : public std::unary_function<cv::Ptr<OpenGlFont>, bool>
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{
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public:
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inline FontCompare(const std::string& fontName, int fontHeight, int fontWeight, int fontStyle)
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: fontName_(fontName), fontHeight_(fontHeight), fontWeight_(fontWeight), fontStyle_(fontStyle)
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{
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}
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bool operator ()(const cv::Ptr<OpenGlFont>& font)
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{
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return font->fontName() == fontName_ && font->fontHeight() == fontHeight_ && font->fontWeight() == fontWeight_ && font->fontStyle() == fontStyle_;
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}
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private:
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std::string fontName_;
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int fontHeight_;
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int fontWeight_;
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int fontStyle_;
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};
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void OpenGlText::add(const std::string& str, CvPoint org, CvScalar color, const std::string& fontName, int fontHeight, int fontWeight, int fontStyle)
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{
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std::vector< cv::Ptr<OpenGlFont> >::iterator fontIt =
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std::find_if(fonts_.begin(), fonts_.end(), FontCompare(fontName, fontHeight, fontWeight, fontStyle));
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if (fontIt == fonts_.end())
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{
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fonts_.push_back(new OpenGlFont(fontName, fontHeight, fontWeight, fontStyle));
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fontIt = fonts_.end() - 1;
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}
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Text text;
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text.str = str;
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text.org = org;
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text.color = color;
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text.font = *fontIt;
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text_.push_back(text);
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}
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void OpenGlText::draw(int width, int height) const
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{
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glDisable(GL_DEPTH_TEST);
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static cv::gpu::GlCamera glCamera;
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glCamera.setupProjectionMatrix();
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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for (size_t i = 0, size = text_.size(); i < size; ++i)
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{
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const Text& text = text_[i];
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text.font->draw(text.str.c_str(), text.str.length(), text.org, text.color, width, height);
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}
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}
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}
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#endif // HAVE_OPENGL
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typedef struct CvWindow
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{
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int signature;
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@ -431,6 +642,8 @@ typedef struct CvWindow
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CvOpenGlCleanCallback glCleanCallback;
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void* glCleanData;
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OpenGlText* glText;
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#endif
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}
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CvWindow;
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@ -944,6 +1157,9 @@ namespace
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CV_CheckGlError();
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if (window->glText)
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window->glText->draw(window->widget->allocation.width, window->widget->allocation.height);
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if (gdk_gl_drawable_is_double_buffered (gldrawable))
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gdk_gl_drawable_swap_buffers(gldrawable);
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else
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@ -1058,6 +1274,14 @@ CV_IMPL int cvNamedWindow( const char* name, int flags )
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#else
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if (flags & CV_WINDOW_OPENGL)
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createGlContext(window);
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window->glDrawCallback = 0;
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window->glDrawData = 0;
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window->glCleanCallback = 0;
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window->glCleanData = 0;
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window->glText = 0;
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#endif
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//
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@ -1144,15 +1368,17 @@ CV_IMPL void cvSetOpenGlContext(const char* name)
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CV_IMPL void cvAddTextOpenGl(const char* name, const char* text, CvPoint org, CvScalar color, const char* fontName, int fontHeight, int fontWeight, int fontStyle)
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{
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CvWindow* window;
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GdkGLContext* glcontext;
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GdkGLDrawable* gldrawable;
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CV_FUNCNAME( "cvAddTextOpenGl" );
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__BEGIN__;
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CV_ERROR( CV_OpenGlNotSupported, "Not Implemented" );
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__END__;
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/*__BEGIN__;
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CvWindow* window;
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CV_ERROR( CV_OpenGlNotSupported, "Not Implemented" );
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__END__;*/
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__BEGIN__;
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if(!name)
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CV_ERROR( CV_StsNullPtr, "NULL name string" );
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@ -1164,28 +1390,35 @@ CV_IMPL void cvAddTextOpenGl(const char* name, const char* text, CvPoint org, Cv
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if (!window->useGl)
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CV_ERROR( CV_OpenGlNotSupported, "Window doesn't support OpenGL" );
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if (!wglMakeCurrent(window->dc, window->hGLRC))
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glcontext = gtk_widget_get_gl_context(window->widget);
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gldrawable = gtk_widget_get_gl_drawable(window->widget);
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if (!gdk_gl_drawable_make_current(gldrawable, glcontext))
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CV_ERROR( CV_OpenGlApiCallError, "Can't Activate The GL Rendering Context" );
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if (!window->glText)
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window->glText = new OpenGlText(window->dc);
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window->glText = new OpenGlText;
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window->glText->add(text, org, color, fontName, fontHeight, fontWeight, fontStyle);
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InvalidateRect(window->hwnd, 0, 0);
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gtk_widget_queue_draw( GTK_WIDGET(window->widget) );
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__END__;*/
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__END__;
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}
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CV_IMPL void cvClearTextOpenGl(const char* name)
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{
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CvWindow* window;
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GdkGLContext* glcontext;
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GdkGLDrawable* gldrawable;
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CV_FUNCNAME( "cvClearTextOpenGl" );
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__BEGIN__;
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CV_ERROR( CV_OpenGlNotSupported, "Not Implemented" );
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__END__;
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/*__BEGIN__;
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CV_ERROR( CV_OpenGlNotSupported, "Not Implemented" );
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__END__;*/
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__BEGIN__;
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CvWindow* window;
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@ -1199,16 +1432,19 @@ CV_IMPL void cvClearTextOpenGl(const char* name)
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if (!window->useGl)
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CV_ERROR( CV_OpenGlNotSupported, "Window doesn't support OpenGL" );
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if (!wglMakeCurrent(window->dc, window->hGLRC))
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glcontext = gtk_widget_get_gl_context(window->widget);
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gldrawable = gtk_widget_get_gl_drawable(window->widget);
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if (!gdk_gl_drawable_make_current(gldrawable, glcontext))
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CV_ERROR( CV_OpenGlApiCallError, "Can't Activate The GL Rendering Context" );
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if (window->glText)
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{
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window->glText->clear();
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InvalidateRect(window->hwnd, 0, 0);
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gtk_widget_queue_draw( GTK_WIDGET(window->widget) );
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}
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__END__;*/
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__END__;
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}
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CV_IMPL void cvUpdateWindow(const char* name)
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@ -1306,6 +1542,9 @@ static void icvDeleteWindow( CvWindow* window )
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GdkGLDrawable* gldrawable = gtk_widget_get_gl_drawable(window->widget);
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gdk_gl_drawable_make_current(gldrawable, glcontext);
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if (window->glText)
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delete window->glText;
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if (window->glCleanCallback)
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{
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@ -190,7 +190,7 @@ namespace
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weight = FW_BLACK;
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break;
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default:
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cvError(CV_StsBadArg, "getFontWidthW32", "Unsopported fonr width", __FILE__, __LINE__);
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cvError(CV_StsBadArg, "getFontWidthW32", "Unsopported font width", __FILE__, __LINE__);
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};
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return weight;
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@ -222,7 +222,7 @@ namespace
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SelectObject(hDC, font);
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if (!wglUseFontBitmaps(hDC, 32, 96, base_))
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cvError(CV_OpenGlApiCallError, "OpenGlText::set", "Can't create font", __FILE__, __LINE__);
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cvError(CV_OpenGlApiCallError, "OpenGlFont", "Can't create font", __FILE__, __LINE__);
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fontName_ = fontName;
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fontHeight_ = fontHeight;
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