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Commit 04037466 authored by Vladislav Vinogradov's avatar Vladislav Vinogradov
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implemented addTextOpenGl under Gtk

parent 07debd6c
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Showing with 256 additions and 17 deletions
modules/highgui/src/window_gtk.cpp
View file @ 04037466
......@@ -398,6 +398,217 @@ typedef struct CvTrackbar
}
CvTrackbar;
// OpenGL support
#ifdef HAVE_OPENGL
namespace
{
class OpenGlFont
{
public:
OpenGlFont(const std::string& fontName, int fontHeight, int fontWeight, int fontStyle);
~OpenGlFont();
void draw(const char* str, int len, CvPoint org, CvScalar color, int width, int height) const;
inline const std::string& fontName() const { return fontName_; }
inline int fontHeight() const { return fontHeight_; }
inline int fontWeight() const { return fontWeight_; }
inline int fontStyle() const { return fontStyle_; }
private:
std::string fontName_;
int fontHeight_;
int fontWeight_;
int fontStyle_;
GLuint base_;
OpenGlFont(const OpenGlFont&);
OpenGlFont& operator =(const OpenGlFont&);
};
PangoWeight getFontWidthPango(int fontWeight)
{
PangoWeight weight;
switch(fontWeight)
{
case CV_FONT_LIGHT:
weight = PANGO_WEIGHT_LIGHT;
break;
case CV_FONT_NORMAL:
weight = PANGO_WEIGHT_NORMAL;
break;
case CV_FONT_DEMIBOLD:
weight = PANGO_WEIGHT_SEMIBOLD;
break;
case CV_FONT_BOLD:
weight = PANGO_WEIGHT_BOLD;
break;
case CV_FONT_BLACK:
weight = PANGO_WEIGHT_ULTRABOLD;
break;
default:
cvError(CV_StsBadArg, "getFontWidthPango", "Unsopported font width", __FILE__, __LINE__);
};
return weight;
}
OpenGlFont::OpenGlFont(const std::string& fontName, int fontHeight, int fontWeight, int fontStyle)
: fontName_(), fontHeight_(0), fontWeight_(0), fontStyle_(0), base_(0)
{
base_ = glGenLists(96);
PangoFontDescription* fontDecr = pango_font_description_new();
pango_font_description_set_size(fontDecr, fontHeight);
pango_font_description_set_family_static(fontDecr, fontName.c_str());
pango_font_description_set_weight(fontDecr, getFontWidthPango(fontWeight));
PangoStyle pangoStyle = fontStyle & CV_STYLE_ITALIC ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL;
pango_font_description_set_style(fontDecr, pangoStyle);
PangoFont* pangoFont = gdk_gl_font_use_pango_font(fontDecr, 32, 96, base_);
if (!pangoFont)
cvError(CV_OpenGlApiCallError, "OpenGlFont", "Can't create font", __FILE__, __LINE__);
pango_font_description_free(fontDecr);
fontName_ = fontName;
fontHeight_ = fontHeight;
fontWeight_ = fontWeight;
fontStyle_ = fontStyle;
}
OpenGlFont::~OpenGlFont()
{
if (base_)
glDeleteLists(base_, 96);
}
void OpenGlFont::draw(const char* str, int len, CvPoint org, CvScalar color, int width, int height) const
{
if (base_)
{
glPushAttrib(GL_LIST_BIT);
glListBase(base_ - 32);
glColor4dv(color.val);
glRasterPos2f(static_cast<float>(org.x) / width, static_cast<float>((org.y + fontHeight_)) / height);
glCallLists(len, GL_UNSIGNED_BYTE, str);
glPopAttrib();
CV_CheckGlError();
}
}
class OpenGlText
{
public:
OpenGlText();
void add(const std::string& text, CvPoint org, CvScalar color, const std::string& fontName, int fontHeight, int fontWeight, int fontStyle);
inline void clear() { text_.clear(); }
void draw(int width, int height) const;
private:
struct Text
{
std::string str;
CvPoint org;
CvScalar color;
cv::Ptr<OpenGlFont> font;
};
std::vector< cv::Ptr<OpenGlFont> > fonts_;
std::vector<Text> text_;
};
OpenGlText::OpenGlText()
{
fonts_.reserve(5);
text_.reserve(5);
}
class FontCompare : public std::unary_function<cv::Ptr<OpenGlFont>, bool>
{
public:
inline FontCompare(const std::string& fontName, int fontHeight, int fontWeight, int fontStyle)
: fontName_(fontName), fontHeight_(fontHeight), fontWeight_(fontWeight), fontStyle_(fontStyle)
{
}
bool operator ()(const cv::Ptr<OpenGlFont>& font)
{
return font->fontName() == fontName_ && font->fontHeight() == fontHeight_ && font->fontWeight() == fontWeight_ && font->fontStyle() == fontStyle_;
}
private:
std::string fontName_;
int fontHeight_;
int fontWeight_;
int fontStyle_;
};
void OpenGlText::add(const std::string& str, CvPoint org, CvScalar color, const std::string& fontName, int fontHeight, int fontWeight, int fontStyle)
{
std::vector< cv::Ptr<OpenGlFont> >::iterator fontIt =
std::find_if(fonts_.begin(), fonts_.end(), FontCompare(fontName, fontHeight, fontWeight, fontStyle));
if (fontIt == fonts_.end())
{
fonts_.push_back(new OpenGlFont(fontName, fontHeight, fontWeight, fontStyle));
fontIt = fonts_.end() - 1;
}
Text text;
text.str = str;
text.org = org;
text.color = color;
text.font = *fontIt;
text_.push_back(text);
}
void OpenGlText::draw(int width, int height) const
{
glDisable(GL_DEPTH_TEST);
static cv::gpu::GlCamera glCamera;
glCamera.setupProjectionMatrix();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
for (size_t i = 0, size = text_.size(); i < size; ++i)
{
const Text& text = text_[i];
text.font->draw(text.str.c_str(), text.str.length(), text.org, text.color, width, height);
}
}
}
#endif // HAVE_OPENGL
typedef struct CvWindow
{
int signature;
......@@ -431,6 +642,8 @@ typedef struct CvWindow
CvOpenGlCleanCallback glCleanCallback;
void* glCleanData;
OpenGlText* glText;
#endif
}
CvWindow;
......@@ -944,6 +1157,9 @@ namespace
CV_CheckGlError();
if (window->glText)
window->glText->draw(window->widget->allocation.width, window->widget->allocation.height);
if (gdk_gl_drawable_is_double_buffered (gldrawable))
gdk_gl_drawable_swap_buffers(gldrawable);
else
......@@ -1058,6 +1274,14 @@ CV_IMPL int cvNamedWindow( const char* name, int flags )
#else
if (flags & CV_WINDOW_OPENGL)
createGlContext(window);
window->glDrawCallback = 0;
window->glDrawData = 0;
window->glCleanCallback = 0;
window->glCleanData = 0;
window->glText = 0;
#endif
//
......@@ -1144,15 +1368,17 @@ CV_IMPL void cvSetOpenGlContext(const char* name)
CV_IMPL void cvAddTextOpenGl(const char* name, const char* text, CvPoint org, CvScalar color, const char* fontName, int fontHeight, int fontWeight, int fontStyle)
{
CvWindow* window;
GdkGLContext* glcontext;
GdkGLDrawable* gldrawable;
CV_FUNCNAME( "cvAddTextOpenGl" );
__BEGIN__;
/*__BEGIN__;
CV_ERROR( CV_OpenGlNotSupported, "Not Implemented" );
__END__;
__END__;*/
/*__BEGIN__;
CvWindow* window;
__BEGIN__;
if(!name)
CV_ERROR( CV_StsNullPtr, "NULL name string" );
......@@ -1164,28 +1390,35 @@ CV_IMPL void cvAddTextOpenGl(const char* name, const char* text, CvPoint org, Cv
if (!window->useGl)
CV_ERROR( CV_OpenGlNotSupported, "Window doesn't support OpenGL" );
if (!wglMakeCurrent(window->dc, window->hGLRC))
glcontext = gtk_widget_get_gl_context(window->widget);
gldrawable = gtk_widget_get_gl_drawable(window->widget);
if (!gdk_gl_drawable_make_current(gldrawable, glcontext))
CV_ERROR( CV_OpenGlApiCallError, "Can't Activate The GL Rendering Context" );
if (!window->glText)
window->glText = new OpenGlText(window->dc);
window->glText = new OpenGlText;
window->glText->add(text, org, color, fontName, fontHeight, fontWeight, fontStyle);
InvalidateRect(window->hwnd, 0, 0);
gtk_widget_queue_draw( GTK_WIDGET(window->widget) );
__END__;*/
__END__;
}
CV_IMPL void cvClearTextOpenGl(const char* name)
{
CvWindow* window;
GdkGLContext* glcontext;
GdkGLDrawable* gldrawable;
CV_FUNCNAME( "cvClearTextOpenGl" );
__BEGIN__;
/*__BEGIN__;
CV_ERROR( CV_OpenGlNotSupported, "Not Implemented" );
__END__;
__END__;*/
/*__BEGIN__;
__BEGIN__;
CvWindow* window;
......@@ -1199,16 +1432,19 @@ CV_IMPL void cvClearTextOpenGl(const char* name)
if (!window->useGl)
CV_ERROR( CV_OpenGlNotSupported, "Window doesn't support OpenGL" );
if (!wglMakeCurrent(window->dc, window->hGLRC))
glcontext = gtk_widget_get_gl_context(window->widget);
gldrawable = gtk_widget_get_gl_drawable(window->widget);
if (!gdk_gl_drawable_make_current(gldrawable, glcontext))
CV_ERROR( CV_OpenGlApiCallError, "Can't Activate The GL Rendering Context" );
if (window->glText)
{
window->glText->clear();
InvalidateRect(window->hwnd, 0, 0);
gtk_widget_queue_draw( GTK_WIDGET(window->widget) );
}
__END__;*/
__END__;
}
CV_IMPL void cvUpdateWindow(const char* name)
......@@ -1306,6 +1542,9 @@ static void icvDeleteWindow( CvWindow* window )
GdkGLDrawable* gldrawable = gtk_widget_get_gl_drawable(window->widget);
gdk_gl_drawable_make_current(gldrawable, glcontext);
if (window->glText)
delete window->glText;
if (window->glCleanCallback)
{
......
modules/highgui/src/window_w32.cpp
View file @ 04037466
......@@ -190,7 +190,7 @@ namespace
weight = FW_BLACK;
break;
default:
cvError(CV_StsBadArg, "getFontWidthW32", "Unsopported fonr width", __FILE__, __LINE__);
cvError(CV_StsBadArg, "getFontWidthW32", "Unsopported font width", __FILE__, __LINE__);
};
return weight;
......@@ -222,7 +222,7 @@ namespace
SelectObject(hDC, font);
if (!wglUseFontBitmaps(hDC, 32, 96, base_))
cvError(CV_OpenGlApiCallError, "OpenGlText::set", "Can't create font", __FILE__, __LINE__);
cvError(CV_OpenGlApiCallError, "OpenGlFont", "Can't create font", __FILE__, __LINE__);
fontName_ = fontName;
fontHeight_ = fontHeight;
......
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