mirror of https://github.com/odrling/Aegisub
Completed (although it could still use some new features) OpenGL Text drawing code, and fully re-implemented video mouse coordinates.
Originally committed to SVN as r1072.
This commit is contained in:
Rodrigo Braz Monteiro
parent
dbd64d935e
commit
51cd2f5ced
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@ -79,15 +79,18 @@ OpenGLText* OpenGLText::GetInstance() {
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////////////
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// Set font
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void OpenGLText::DoSetFont(wxString face,int size) {
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void OpenGLText::DoSetFont(wxString face,int size,bool bold,bool italics) {
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// No change required
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if (size == fontSize && face == fontFace) return;
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if (size == fontSize && face == fontFace && bold == fontBold && italics == fontItalics) return;
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// Set font
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fontFace = face;
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fontSize = size;
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fontBold = bold;
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fontItalics = italics;
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font.SetFaceName(fontFace);
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font.SetPointSize(size);
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font.SetWeight(bold ? wxFONTWEIGHT_BOLD : wxFONTWEIGHT_NORMAL);
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// Delete all old data
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Reset();
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@ -107,14 +110,35 @@ void OpenGLText::DoSetColour(wxColour col,float alpha) {
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/////////
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// Print
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void OpenGLText::DoPrint(wxString text,int x,int y) {
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// Set OpenGL
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glEnable(GL_BLEND);
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glEnable(GL_TEXTURE_2D);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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// Draw border
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glColor4f(0.0f,0.0f,0.0f,1.0f);
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DrawString(text,x-1,y);
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DrawString(text,x+1,y);
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DrawString(text,x,y-1);
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DrawString(text,x,y+1);
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// Draw primary string
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glColor4f(r,g,b,a);
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DrawString(text,x,y);
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// Disable blend
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glDisable(GL_BLEND);
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}
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/////////////////
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// Draw a string
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void OpenGLText::DrawString(wxString text,int x,int y) {
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// Variables
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int dx=x,dy=y;
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size_t len = text.Length();
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OpenGLTextGlyph glyph;
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lineHeight = 16; // FIXME
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// Set OpenGL
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// TODO
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lineHeight = 0;
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int dx=x,dy=y;
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// Draw string
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for (size_t i=0;i<len;i++) {
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@ -132,11 +156,50 @@ void OpenGLText::DoPrint(wxString text,int x,int y) {
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glyph = GetGlyph(curChar);
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glyph.Draw(dx,dy);
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dx += glyph.w;
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if (glyph.h > lineHeight) lineHeight = glyph.h;
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}
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}
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}
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/////////////////////////
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// Calculate text extent
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void OpenGLText::DoGetExtent(wxString text,int &w,int &h) {
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// Variables
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size_t len = text.Length();
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OpenGLTextGlyph glyph;
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lineHeight = 0;
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int dx=0,dy=0;
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w = 0;
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h = 0;
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// Simulate drawing of string
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for (size_t i=0;i<len;i++) {
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// Get current character
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int curChar = text[i];
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// Handle carriage returns
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if (curChar == '\n') {
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if (dx > w) w = dx;
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dx = 0;
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dy += lineHeight;
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lineHeight = 0;
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}
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// Handle normal glyphs
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else {
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glyph = GetGlyph(curChar);
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dx += glyph.w;
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if (glyph.h > lineHeight) lineHeight = glyph.h;
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}
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}
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// Return results
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if (dx > w) w = dx;
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h = dy+lineHeight;
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}
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///////////////
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// Get a glyph
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OpenGLTextGlyph OpenGLText::GetGlyph(int i) {
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@ -216,7 +279,7 @@ OpenGLTextTexture::~OpenGLTextTexture() {
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//////////////////////////
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// Can fit a glyph in it?
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bool OpenGLTextTexture::TryToInsert(OpenGLTextGlyph glyph) {
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bool OpenGLTextTexture::TryToInsert(OpenGLTextGlyph &glyph) {
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// Get size
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int w = glyph.w;
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int h = glyph.h;
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@ -225,18 +288,18 @@ bool OpenGLTextTexture::TryToInsert(OpenGLTextGlyph glyph) {
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// Can fit in this row?
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if (x + w < width) {
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Insert(glyph);
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x += w;
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if (y+h > nextY) nextY = y+h;
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Insert(glyph);
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return true;
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}
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// Can fit the next row?
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else {
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y = nextY;
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if (y+h > height) return false;
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nextY = y+h;
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if (nextY+h > height) return false;
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x = 0;
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y = nextY;
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nextY = y+h;
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Insert(glyph);
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return true;
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}
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@ -245,7 +308,7 @@ bool OpenGLTextTexture::TryToInsert(OpenGLTextGlyph glyph) {
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//////////
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// Insert
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void OpenGLTextTexture::Insert(OpenGLTextGlyph glyph) {
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void OpenGLTextTexture::Insert(OpenGLTextGlyph &glyph) {
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// Glyph data
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wxString str = wxChar(glyph.value);
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int w = glyph.w;
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@ -259,17 +322,34 @@ void OpenGLTextTexture::Insert(OpenGLTextGlyph glyph) {
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glyph.tex = tex;
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// Create bitmap and bind it to a DC
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wxBitmap bmp(w,h,24);
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wxBitmap bmp(((w+1)/2)*2,((h+1)/2)*2,24);
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wxMemoryDC dc(bmp);
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// Draw text and convert to image
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dc.SetFont(OpenGLText::GetFont());
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dc.SetTextForeground(wxColour(255,255,255));
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dc.DrawText(str,0,0);
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//bmp.SaveFile(wxString::Format(_T("glyph%i.bmp"),glyph.value),wxBITMAP_TYPE_BMP);
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wxImage img = bmp.ConvertToImage();
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// Upload image to video memory
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// Convert to alpha
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int imgw = img.GetWidth();
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int imgh = img.GetHeight();
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size_t len = imgw*imgh;
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const unsigned char *src = img.GetData();
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glTexSubImage2D(GL_TEXTURE_2D,0,x,y,w,h,GL_ALPHA,GL_UNSIGNED_BYTE,src);
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const unsigned char *read = src;
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unsigned char *alpha = new unsigned char[len*2];
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unsigned char *write = alpha;
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for (size_t i=0;i<len;i++) {
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*write++ = 255;
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*write++ = *read++;
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read += 2;
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}
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// Upload image to video memory
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glBindTexture(GL_TEXTURE_2D, tex);
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glTexSubImage2D(GL_TEXTURE_2D,0,x,y,imgw,imgh,GL_LUMINANCE_ALPHA,GL_UNSIGNED_BYTE,alpha);
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delete[] alpha;
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if (glGetError()) throw _T("Error uploading glyph data to video memory.");
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}
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@ -281,9 +361,8 @@ void OpenGLTextGlyph::Draw(int x,int y) {
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glPushMatrix();
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glTranslatef((float)x,(float)y,0.0f);
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// Set blend
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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// Set texture
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glBindTexture(GL_TEXTURE_2D, tex);
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// Draw quad
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glBegin(GL_QUADS);
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@ -301,8 +380,7 @@ void OpenGLTextGlyph::Draw(int x,int y) {
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glVertex2f(w,0);
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glEnd();
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// Restore GL state
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glDisable(GL_BLEND);
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// Restore matrix
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glPopMatrix();
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}
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@ -69,12 +69,12 @@ private:
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int x,y,nextY;
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int width,height;
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void Insert(OpenGLTextGlyph glyph);
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void Insert(OpenGLTextGlyph &glyph);
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public:
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GLuint tex;
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bool TryToInsert(OpenGLTextGlyph glyph);
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bool TryToInsert(OpenGLTextGlyph &glyph);
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OpenGLTextTexture(int w,int h);
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~OpenGLTextTexture();
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@ -88,6 +88,8 @@ private:
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float r,g,b,a;
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int lineHeight;
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int fontSize;
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bool fontBold;
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bool fontItalics;
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wxString fontFace;
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wxFont font;
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@ -104,13 +106,16 @@ private:
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void Reset();
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static OpenGLText* GetInstance();
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void DoSetFont(wxString face,int size);
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void DoSetFont(wxString face,int size,bool bold,bool italics);
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void DoSetColour(wxColour col,float alpha);
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void DoPrint(wxString text,int x,int y);
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void DrawString(wxString text,int x,int y);
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void DoGetExtent(wxString text,int &w,int &h);
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public:
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static wxFont GetFont() { return GetInstance()->font; }
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static void SetFont(wxString face,int size) { GetInstance()->DoSetFont(face,size); }
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static void SetFont(wxString face=_T("Verdana"),int size=10,bool bold=true,bool italics=false) { GetInstance()->DoSetFont(face,size,bold,italics); }
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static void SetColour(wxColour col,float alpha=1.0f) { GetInstance()->DoSetColour(col,alpha); }
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static void Print(wxString text,int x,int y) { GetInstance()->DoPrint(text,x,y); }
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static void GetExtent(wxString text,int &w,int &h) { GetInstance()->DoGetExtent(text,w,h); }
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};
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@ -345,9 +345,12 @@ void VideoDisplay::OnMouseEvent(wxMouseEvent& event) {
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// Disable when playing
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if (VideoContext::Get()->IsPlaying()) return;
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if (event.Leaving()) {
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// Set mode, for whatever reason this is needed
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visual->SetMode(visual->mode);
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// OnMouseLeave isn't called as long as we have an OnMouseEvent
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// Just check for it and call it manually instead
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if (event.Leaving()) {
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OnMouseLeave(event);
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event.Skip(true);
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return;
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@ -501,34 +501,24 @@ void VideoDisplayVisual::DrawOverlay() {
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glDisable(GL_COLOR_LOGIC_OP);
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// Setup text
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OpenGLText::SetFont(_T("Verdana"),10);
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OpenGLText::Print(mouseText,x,y);
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int tw,th;
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OpenGLText::SetFont(_T("Verdana"),12,true);
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OpenGLText::SetColour(wxColour(255,255,255));
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OpenGLText::GetExtent(mouseText,tw,th);
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//// Setup text
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//wxFont font(10,wxFONTFAMILY_DEFAULT,wxFONTSTYLE_NORMAL,wxFONTWEIGHT_BOLD,false,_T("Verdana"));
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//dc.SetFont(font);
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//int tw,th;
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//parent->GetTextExtent(mouseText,&tw,&th,NULL,NULL,&font);
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// Calculate draw position
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bool left = x > w/2;
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bool bottom = y < h/2;
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//// Inversion
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//bool left = x > w/2;
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//bool bottom = y < h/2;
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// Text draw coords
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int dx = x,dy = y;
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if (left) dx -= tw + 4;
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else dx += 4;
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if (bottom) dy += 3;
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else dy -= th + 3;
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//// Text draw coords
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//int dx = x,dy = y;
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//if (left) dx -= tw + 4;
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//else dx += 4;
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//if (bottom) dy += 3;
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//else dy -= th + 3;
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//// Draw text
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//dc.SetTextForeground(wxColour(64,64,64));
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//dc.DrawText(mouseText,dx+1,dy-1);
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//dc.DrawText(mouseText,dx+1,dy+1);
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//dc.DrawText(mouseText,dx-1,dy-1);
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//dc.DrawText(mouseText,dx-1,dy+1);
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//dc.SetTextForeground(colour[2]);
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//dc.DrawText(mouseText,dx,dy);
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// Draw text
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OpenGLText::Print(mouseText,dx,dy);
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}
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}
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