/* Returns the width of the font numbers charcter */
int DT_FontWidth(int FontNumber) {
BitFont *CurrentFont;
CurrentFont = DT_FontPointer(FontNumber);
if(CurrentFont)
return CurrentFont->CharWidth;
else
return 0;
}
/* Returns the height of the font numbers character
* returns 0 if the fontnumber was invalid */
int DT_FontHeight(int FontNumber) {
BitFont *CurrentFont;
CurrentFont = DT_FontPointer(FontNumber);
if(CurrentFont)
return CurrentFont->CharHeight;
else
return 0;
}
/* Updates the console, draws the background and the history lines. Does not draw the Commandline */
void CON_UpdateConsole(ConsoleInformation *console) {
int loop;
int loop2;
int Screenlines;
SDL_Rect DestRect;
BitFont *CurrentFont = DT_FontPointer(console->FontNumber);
if(!console)
return;
/* Due to the Blits, the update is not very fast: So only update if it's worth it */
if(!CON_isVisible(console))
return;
Screenlines = console->ConsoleSurface->h / console->FontHeight;
SDL_FillRect(console->ConsoleSurface, NULL, SDL_MapRGBA(console->ConsoleSurface->format, 0, 0, 0, console->ConsoleAlpha));
// TR2
// if(console->OutputScreen->flags & SDL_OPENGLBLIT)
// SDL_SetSurfaceAlphaMod(console->ConsoleSurface, SDL_ALPHA_OPAQUE);
/* draw the background image if there is one */
if(console->BackgroundImage) {
DestRect.x = console->BackX;
DestRect.y = console->BackY;
DestRect.w = console->BackgroundImage->w;
DestRect.h = console->BackgroundImage->h;
SDL_BlitSurface(console->BackgroundImage, NULL, console->ConsoleSurface, &DestRect);
}
/* Draw the text from the back buffers, calculate in the scrollback from the user
* this is a normal SDL software-mode blit, so we need to temporarily set the ColorKey
* for the font, and then clear it when we're done.
*/
/*TR2 if((console->OutputScreen->flags & SDL_OPENGLBLIT) && (console->OutputScreen->format->BytesPerPixel > 2)) {
Uint32 *pix = (Uint32 *) (CurrentFont->FontSurface->pixels);
SDL_SetColorKey(CurrentFont->FontSurface, SDL_TRUE, *pix);
}*/
/* now draw text from last but second line to top
loop: for every line in the history
loop2: draws the scroll indicators to the line above the Commandline
*/
for(loop = 0; loop < Screenlines-1 && loop < console->LineBuffer - console->ConsoleScrollBack; loop++) {
if(console->ConsoleScrollBack != 0 && loop == 0)
for(loop2 = 0; loop2 < (console->VChars / 5) + 1; loop2++)
DT_DrawText(CON_SCROLL_INDICATOR, console->ConsoleSurface, console->FontNumber, CON_CHAR_BORDER + (loop2*5*console->FontWidth), (Screenlines - loop - 2) * console->FontHeight);
else
DT_DrawText(console->ConsoleLines[console->ConsoleScrollBack + loop], console->ConsoleSurface, console->FontNumber, CON_CHAR_BORDER, (Screenlines - loop - 2) * console->FontHeight);
}
// TR2
//if(console->OutputScreen->flags & SDL_OPENGLBLIT)
// SDL_SetColorKey(CurrentFont->FontSurface, 0, 0);
}
/* Takes the font type, coords, and text to draw to the surface*/
void DT_DrawText(const char *string, SDL_Surface *surface, int FontType, int x, int y) {
int loop;
size_t characters;
int current;
SDL_Rect SourceRect, DestRect;
BitFont *CurrentFont;
CurrentFont = DT_FontPointer(FontType);
/* see how many characters can fit on the screen */
if(x > surface->w || y > surface->h)
return;
if(strlen(string) < (surface->w - x) / CurrentFont->CharWidth)
characters = strlen(string);
else
characters = (surface->w - x) / CurrentFont->CharWidth;
DestRect.x = x;
DestRect.y = y;
DestRect.w = CurrentFont->CharWidth;
DestRect.h = CurrentFont->CharHeight;
SourceRect.y = 0;
SourceRect.w = CurrentFont->CharWidth;
SourceRect.h = CurrentFont->CharHeight;
/* Now draw it */
for(loop = 0; loop < characters; loop++) {
current = string[loop];
if (current<0 || current > 255)
current = 0;
/* SourceRect.x = string[loop] * CurrentFont->CharWidth; */
SourceRect.x = current * CurrentFont->CharWidth;
SDL_BlitSurface(CurrentFont->FontSurface, &SourceRect, surface, &DestRect);
DestRect.x += CurrentFont->CharWidth;
}
/* if we're in OpenGL-mode, we need to manually update after blitting. */
// TR2 skipped
/*if(surface->flags & SDL_OPENGLBLIT) {
DestRect.x = x;
DestRect.w = (Uint16)characters * CurrentFont->CharWidth;
SDL_UpdateRects(surface, 1, &DestRect);
}*/
}
/* sets the transparency value for the font in question. assumes that
* we're in an OpenGL context. */
void DT_SetFontAlphaGL(int FontNumber, int a) {
unsigned char val;
BitFont *CurrentFont;
unsigned char r_targ, g_targ, b_targ;
int i, imax;
unsigned char *pix;
/* get pointer to font */
CurrentFont = DT_FontPointer(FontNumber);
if(CurrentFont == NULL) {
PRINT_ERROR("Setting font alpha for non-existent font!\n");
return;
}
if(CurrentFont->FontSurface->format->BytesPerPixel == 2) {
PRINT_ERROR("16-bit SDL surfaces do not support alpha-blending under OpenGL\n");
return;
}
if(a < SDL_ALPHA_TRANSPARENT)
val = SDL_ALPHA_TRANSPARENT;
else if(a > SDL_ALPHA_OPAQUE)
val = SDL_ALPHA_OPAQUE;
else
val = a;
/* iterate over all pixels in the font surface. For each
* pixel that is (255,0,255), set its alpha channel
* appropriately. */
imax = CurrentFont->FontSurface->h * (CurrentFont->FontSurface->w << 2);
pix = (unsigned char *)(CurrentFont->FontSurface->pixels);
r_targ = 255; /*pix[0]; */
g_targ = 0; /*pix[1]; */
b_targ = 255; /*pix[2]; */
for(i = 3; i < imax; i += 4)
if(pix[i - 3] == r_targ && pix[i - 2] == g_targ && pix[i - 1] == b_targ)
pix[i] = val;
/* also make sure that alpha blending is disabled for the font
surface. */
SDL_SetSurfaceAlphaMod(CurrentFont->FontSurface, SDL_ALPHA_OPAQUE);
}
/* completely rewritten by C.Wacha */
void DrawCommandLine() {
SDL_Rect rect;
int x;
int commandbuffer;
BitFont* CurrentFont;
static Uint32 NextBlinkTime = 0; /* time the consoles cursor blinks again */
static int LastCursorPos = 0; /* Last Cursor Position */
static int Blink = 0; /* Is the cursor currently blinking */
if(!Topmost)
return;
commandbuffer = Topmost->VChars - strlen(Topmost->Prompt) - 1; /* -1 to make cursor visible */
CurrentFont = DT_FontPointer(Topmost->FontNumber);
/* calculate display offset from current cursor position */
if(Topmost->Offset < Topmost->CursorPos - commandbuffer)
Topmost->Offset = Topmost->CursorPos - commandbuffer;
if(Topmost->Offset > Topmost->CursorPos)
Topmost->Offset = Topmost->CursorPos;
/* first add prompt to visible part */
strcpy(Topmost->VCommand, Topmost->Prompt);
/* then add the visible part of the command */
strncat(Topmost->VCommand, &Topmost->Command[Topmost->Offset], strlen(&Topmost->Command[Topmost->Offset]));
/* now display the result */
/* once again we're drawing text, so in OpenGL context we need to temporarily set up
software-mode transparency. */
/*TR2 if(Topmost->OutputScreen->flags & SDL_OPENGLBLIT) {
Uint32 *pix = (Uint32 *) (CurrentFont->FontSurface->pixels);
SDL_SetColorKey(CurrentFont->FontSurface, SDL_TRUE, *pix);
}*/
/* first of all restore InputBackground */
rect.x = 0;
rect.y = Topmost->ConsoleSurface->h - Topmost->FontHeight;
rect.w = Topmost->InputBackground->w;
rect.h = Topmost->InputBackground->h;
SDL_BlitSurface(Topmost->InputBackground, NULL, Topmost->ConsoleSurface, &rect);
/* now add the text */
DT_DrawText(Topmost->VCommand, Topmost->ConsoleSurface, Topmost->FontNumber, CON_CHAR_BORDER, Topmost->ConsoleSurface->h - Topmost->FontHeight);
/* at last add the cursor
check if the blink period is over */
if(SDL_GetTicks() > NextBlinkTime) {
NextBlinkTime = SDL_GetTicks() + CON_BLINK_RATE;
Blink = 1 - Blink;
}
/* check if cursor has moved - if yes display cursor anyway */
if(Topmost->CursorPos != LastCursorPos) {
LastCursorPos = Topmost->CursorPos;
NextBlinkTime = SDL_GetTicks() + CON_BLINK_RATE;
Blink = 1;
}
if(Blink) {
x = CON_CHAR_BORDER + Topmost->FontWidth * (Topmost->CursorPos - Topmost->Offset + strlen(Topmost->Prompt));
if(Topmost->InsMode)
DT_DrawText(CON_INS_CURSOR, Topmost->ConsoleSurface, Topmost->FontNumber, x, Topmost->ConsoleSurface->h - Topmost->FontHeight);
else
DT_DrawText(CON_OVR_CURSOR, Topmost->ConsoleSurface, Topmost->FontNumber, x, Topmost->ConsoleSurface->h - Topmost->FontHeight);
}
/* TR2 if(Topmost->OutputScreen->flags & SDL_OPENGLBLIT) {
SDL_SetColorKey(CurrentFont->FontSurface, 0, 0);
}*/
}
/* completely rewritten by C.Wacha */
void DrawCommandLine()
{
SDL_Rect rect;
int x;
int commandbuffer;
BitFont *CurrentFont;
static Uint32 NextBlinkTime = 0; /* time the consoles cursor blinks again */
static int LastCursorPos = 0; /* Last Cursor Position */
static int Blink = 0; /* Is the cursor currently blinking */
if (!Topmost)
return;
commandbuffer = Topmost->VChars - strlen(Topmost->Prompt) - 1; /* -1 to make cursor visible */
CurrentFont = DT_FontPointer(Topmost->FontNumber);
/* calculate display offset from current cursor position */
if (Topmost->Offset < Topmost->CursorPos - commandbuffer)
Topmost->Offset = Topmost->CursorPos - commandbuffer;
if (Topmost->Offset > Topmost->CursorPos)
Topmost->Offset = Topmost->CursorPos;
/* first add prompt to visible part */
strcpy(Topmost->VCommand, Topmost->Prompt);
/* then add the visible part of the command */
strncat(Topmost->VCommand, &Topmost->Command[Topmost->Offset],
strlen(&Topmost->Command[Topmost->Offset]));
/* first of all restore InputBackground */
rect.x = 0;
rect.y = Topmost->ConsoleSurface->h - Topmost->FontHeight;
rect.w = Topmost->InputBackground->w;
rect.h = Topmost->InputBackground->h;
SDL_BlitSurface(Topmost->InputBackground, NULL,
Topmost->ConsoleSurface, &rect);
/* now add the text */
DT_DrawText(Topmost->VCommand, Topmost->ConsoleSurface,
Topmost->FontNumber, CON_CHAR_BORDER,
Topmost->ConsoleSurface->h - Topmost->FontHeight);
/* at last add the cursor
check if the blink period is over */
if (SDL_GetTicks() > NextBlinkTime) {
NextBlinkTime = SDL_GetTicks() + CON_BLINK_RATE;
Blink = 1 - Blink;
}
/* check if cursor has moved - if yes display cursor anyway */
if (Topmost->CursorPos != LastCursorPos) {
LastCursorPos = Topmost->CursorPos;
NextBlinkTime = SDL_GetTicks() + CON_BLINK_RATE;
Blink = 1;
}
if (Blink) {
x = CON_CHAR_BORDER + Topmost->FontWidth * (Topmost->CursorPos -
Topmost->Offset +
strlen(Topmost->
Prompt));
if (Topmost->InsMode)
DT_DrawText(CON_INS_CURSOR, Topmost->ConsoleSurface,
Topmost->FontNumber, x,
Topmost->ConsoleSurface->h - Topmost->FontHeight);
else
DT_DrawText(CON_OVR_CURSOR, Topmost->ConsoleSurface,
Topmost->FontNumber, x,
Topmost->ConsoleSurface->h - Topmost->FontHeight);
}
}
