X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Flibgame%2Ftext.c;h=36cb6dd5a90bf61e89fe9bcd2b907fb414120d25;hp=a4b60302110914df7d3b35640470c9b9ddbc95e3;hb=3ff2e8a0b5c27b99a9920bdf5ed82bc41bf40181;hpb=76b3cb92402127cde194888bab57397eca735220 diff --git a/src/libgame/text.c b/src/libgame/text.c index a4b60302..36cb6dd5 100644 --- a/src/libgame/text.c +++ b/src/libgame/text.c @@ -1,15 +1,13 @@ -/*********************************************************** -* Artsoft Retro-Game Library * -*----------------------------------------------------------* -* (c) 1994-2002 Artsoft Entertainment * -* Holger Schemel * -* Detmolder Strasse 189 * -* 33604 Bielefeld * -* Germany * -* e-mail: info@artsoft.org * -*----------------------------------------------------------* -* text.c * -***********************************************************/ +// ============================================================================ +// Artsoft Retro-Game Library +// ---------------------------------------------------------------------------- +// (c) 1995-2014 by Artsoft Entertainment +// Holger Schemel +// info@artsoft.org +// http://www.artsoft.org/ +// ---------------------------------------------------------------------------- +// text.c +// ============================================================================ #include #include @@ -22,100 +20,14 @@ /* font functions */ /* ========================================================================= */ -#if defined(TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND) -static GC font_clip_gc = None; - -static void InitFontClipmasks() -{ - XGCValues clip_gc_values; - unsigned long clip_gc_valuemask; - GC copy_clipmask_gc; - int i, j; - - /* This stuff is needed because X11 (XSetClipOrigin(), to be precise) is - often very slow when preparing a masked XCopyArea() for big Pixmaps. - To prevent this, create small (tile-sized) mask Pixmaps which will then - be set much faster with XSetClipOrigin() and speed things up a lot. */ - - clip_gc_values.graphics_exposures = False; - clip_gc_valuemask = GCGraphicsExposures; - font_clip_gc = XCreateGC(display, window->drawable, - clip_gc_valuemask, &clip_gc_values); - - /* create graphic context structures needed for clipping */ - clip_gc_values.graphics_exposures = False; - clip_gc_valuemask = GCGraphicsExposures; - copy_clipmask_gc = XCreateGC(display, - gfx.font_bitmap_info[0].bitmap->clip_mask, - clip_gc_valuemask, &clip_gc_values); - - /* create only those clipping Pixmaps we really need */ - for (i=0; i < gfx.num_fonts; i++) - { - if (gfx.font_bitmap_info[i].bitmap == NULL) - continue; - - gfx.font_bitmap_info[i].clip_mask = - checked_calloc(gfx.font_bitmap_info[i].num_chars * sizeof(Pixmap)); - - for (j=0; j < gfx.font_bitmap_info[i].num_chars; j++) - { - Bitmap *src_bitmap = gfx.font_bitmap_info[i].bitmap; - Pixmap src_pixmap = src_bitmap->clip_mask; - int xpos = j % gfx.font_bitmap_info[i].num_chars_per_line; - int ypos = j / gfx.font_bitmap_info[i].num_chars_per_line; - int width = gfx.font_bitmap_info[i].width; - int height = gfx.font_bitmap_info[i].height; - int src_x = gfx.font_bitmap_info[i].src_x + xpos * width; - int src_y = gfx.font_bitmap_info[i].src_y + ypos * height; - - gfx.font_bitmap_info[i].clip_mask[j] = - XCreatePixmap(display, window->drawable, width, height, 1); - - XCopyArea(display, src_pixmap, gfx.font_bitmap_info[i].clip_mask[j], - copy_clipmask_gc, src_x, src_y, width, height, 0, 0); - } - } - - XFreeGC(display, copy_clipmask_gc); -} - -static void FreeFontClipmasks() -{ - int i, j; - - if (gfx.num_fonts == 0 || gfx.font_bitmap_info[0].bitmap == NULL) - return; - - for (i=0; i < gfx.num_fonts; i++) - { - if (gfx.font_bitmap_info[i].clip_mask) - { - for (j=0; j < gfx.font_bitmap_info[i].num_chars; j++) - XFreePixmap(display, gfx.font_bitmap_info[i].clip_mask[j]); - free(gfx.font_bitmap_info[i].clip_mask); - } - - gfx.font_bitmap_info[i].clip_mask = NULL; - gfx.font_bitmap_info[i].num_chars = 0; - } - - if (font_clip_gc) - XFreeGC(display, font_clip_gc); - font_clip_gc = None; -} -#endif /* TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND */ - void InitFontInfo(struct FontBitmapInfo *font_bitmap_info, int num_fonts, - int (*select_font_function)(int)) + int (*select_font_function)(int), + int (*get_font_from_token_function)(char *)) { gfx.num_fonts = num_fonts; gfx.font_bitmap_info = font_bitmap_info; gfx.select_font_function = select_font_function; - -#if defined(TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND) - InitFontClipmasks(); -#endif + gfx.get_font_from_token_function = get_font_from_token_function; } void FreeFontInfo(struct FontBitmapInfo *font_bitmap_info) @@ -123,13 +35,16 @@ void FreeFontInfo(struct FontBitmapInfo *font_bitmap_info) if (font_bitmap_info == NULL) return; -#if defined(TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND) - FreeFontClipmasks(); -#endif - free(font_bitmap_info); } +struct FontBitmapInfo *getFontBitmapInfo(int font_nr) +{ + int font_bitmap_id = gfx.select_font_function(font_nr); + + return &gfx.font_bitmap_info[font_bitmap_id]; +} + int getFontWidth(int font_nr) { int font_bitmap_id = gfx.select_font_function(font_nr); @@ -149,12 +64,12 @@ int getTextWidth(char *text, int font_nr) return (text != NULL ? strlen(text) * getFontWidth(font_nr) : 0); } -static char getFontCharPosition(int font_nr, char c) +static int getFontCharPosition(int font_nr, char c) { int font_bitmap_id = gfx.select_font_function(font_nr); struct FontBitmapInfo *font = &gfx.font_bitmap_info[font_bitmap_id]; boolean default_font = (font->num_chars == DEFAULT_NUM_CHARS_PER_FONT); - int font_pos = c - 32; + int font_pos = (unsigned char)c - 32; /* map some special characters to their ascii values in default font */ if (default_font) @@ -178,20 +93,71 @@ void getFontCharSource(int font_nr, char c, Bitmap **bitmap, int *x, int *y) *y = font->src_y + (font_pos / font->num_chars_per_line) * font->height; } -void DrawInitText(char *text, int ypos, int font_nr) + +/* ========================================================================= */ +/* text string helper functions */ +/* ========================================================================= */ + +int maxWordLengthInString(char *text) +{ + char *text_ptr; + int word_len = 0, max_word_len = 0; + + for (text_ptr = text; *text_ptr; text_ptr++) + { + word_len = (*text_ptr != ' ' ? word_len + 1 : 0); + + max_word_len = MAX(word_len, max_word_len); + } + + return max_word_len; +} + + +/* ========================================================================= */ +/* simple text drawing functions */ +/* ========================================================================= */ + +void DrawInitTextExt(char *text, int ypos, int font_nr, boolean force) { - if (window && + LimitScreenUpdates(TRUE); + + UPDATE_BUSY_STATE(); + + if (window != NULL && + gfx.draw_init_text && gfx.num_fonts > 0 && gfx.font_bitmap_info[font_nr].bitmap != NULL) { - ClearRectangle(window, 0, ypos, video.width, getFontHeight(font_nr)); - DrawTextExt(window, (video.width - getTextWidth(text, font_nr)) / 2, ypos, - text, font_nr, BLIT_OPAQUE); - FlushDisplay(); + int x = (video.width - getTextWidth(text, font_nr)) / 2; + int y = ypos; + int width = video.width; + int height = getFontHeight(font_nr); + + ClearRectangle(drawto, 0, y, width, height); + DrawTextExt(drawto, x, y, text, font_nr, BLIT_OPAQUE); + + BlitBitmap(drawto, window, 0, 0, video.width, video.height, 0, 0); } } -void DrawTextFCentered(int y, int font_nr, char *format, ...) +void DrawInitText(char *text, int ypos, int font_nr) +{ + // DrawInitTextExt(text, ypos, font_nr, TRUE); + DrawInitTextExt(text, ypos, font_nr, FALSE); +} + +void DrawInitTextAlways(char *text, int ypos, int font_nr) +{ + DrawInitTextExt(text, ypos, font_nr, TRUE); +} + +void DrawInitTextIfNeeded(char *text, int ypos, int font_nr) +{ + DrawInitTextExt(text, ypos, font_nr, FALSE); +} + +void DrawTextF(int x, int y, int font_nr, char *format, ...) { char buffer[MAX_OUTPUT_LINESIZE + 1]; va_list ap; @@ -201,13 +167,12 @@ void DrawTextFCentered(int y, int font_nr, char *format, ...) va_end(ap); if (strlen(buffer) > MAX_OUTPUT_LINESIZE) - Error(ERR_EXIT, "string too long in DrawTextFCentered() -- aborting"); + Error(ERR_EXIT, "string too long in DrawTextF() -- aborting"); - DrawText(gfx.sx + (gfx.sxsize - getTextWidth(buffer, font_nr)) / 2, - gfx.sy + y, buffer, font_nr); + DrawText(gfx.sx + x, gfx.sy + y, buffer, font_nr); } -void DrawTextF(int x, int y, int font_nr, char *format, ...) +void DrawTextFCentered(int y, int font_nr, char *format, ...) { char buffer[MAX_OUTPUT_LINESIZE + 1]; va_list ap; @@ -217,9 +182,38 @@ void DrawTextF(int x, int y, int font_nr, char *format, ...) va_end(ap); if (strlen(buffer) > MAX_OUTPUT_LINESIZE) - Error(ERR_EXIT, "string too long in DrawTextF() -- aborting"); + Error(ERR_EXIT, "string too long in DrawTextFCentered() -- aborting"); - DrawText(gfx.sx + x, gfx.sy + y, buffer, font_nr); + DrawText(gfx.sx + (gfx.sxsize - getTextWidth(buffer, font_nr)) / 2, + gfx.sy + y, buffer, font_nr); +} + +void DrawTextS(int x, int y, int font_nr, char *text) +{ + DrawText(gfx.sx + x, gfx.sy + y, text, font_nr); +} + +void DrawTextSCentered(int y, int font_nr, char *text) +{ + DrawText(gfx.sx + (gfx.sxsize - getTextWidth(text, font_nr)) / 2, + gfx.sy + y, text, font_nr); +} + +void DrawTextCentered(int y, int font_nr, char *text) +{ + DrawText((gfx.sxsize - getTextWidth(text, font_nr)) / 2, y, text, font_nr); +} + +void DrawTextSAligned(int x, int y, char *text, int font_nr, int align) +{ + DrawText(gfx.sx + ALIGNED_XPOS(x, getTextWidth(text, font_nr), align), + gfx.sx + y, text, font_nr); +} + +void DrawTextAligned(int x, int y, char *text, int font_nr, int align) +{ + DrawText(ALIGNED_XPOS(x, getTextWidth(text, font_nr), align), + y, text, font_nr); } void DrawText(int x, int y, char *text, int font_nr) @@ -231,17 +225,22 @@ void DrawText(int x, int y, char *text, int font_nr) DrawTextExt(drawto, x, y, text, font_nr, mask_mode); - if (x < gfx.dx) + if (IN_GFX_FIELD_FULL(x, y)) redraw_mask |= REDRAW_FIELD; - else if (y < gfx.vy || gfx.vy == 0) + else if (IN_GFX_DOOR_1(x, y)) redraw_mask |= REDRAW_DOOR_1; + else if (IN_GFX_DOOR_2(x, y)) + redraw_mask |= REDRAW_DOOR_2; + else if (IN_GFX_DOOR_3(x, y)) + redraw_mask |= REDRAW_DOOR_3; + else + redraw_mask |= REDRAW_ALL; } void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text, int font_nr, int mask_mode) { - int font_bitmap_id = gfx.select_font_function(font_nr); - struct FontBitmapInfo *font = &gfx.font_bitmap_info[font_bitmap_id]; + struct FontBitmapInfo *font = getFontBitmapInfo(font_nr); int font_width = getFontWidth(font_nr); int font_height = getFontHeight(font_nr); Bitmap *src_bitmap; @@ -251,16 +250,35 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text, if (font->bitmap == NULL) return; + /* skip text to be printed outside the window (left/right will be clipped) */ + if (dst_y < 0 || dst_y + font_height > video.height) + return; + /* add offset for drawing font characters */ - dst_x += font->draw_x; - dst_y += font->draw_y; + dst_x += font->draw_xoffset; + dst_y += font->draw_yoffset; while (*text_ptr) { char c = *text_ptr++; + if (c == '\n') + c = ' '; /* print space instead of newline */ + getFontCharSource(font_nr, c, &src_bitmap, &src_x, &src_y); + /* clip text at the left side of the window */ + if (dst_x < 0) + { + dst_x += font_width; + + continue; + } + + /* clip text at the right side of the window */ + if (dst_x + font_width > video.width) + break; + if (mask_mode == BLIT_INVERSE) /* special mode for text gadgets */ { /* first step: draw solid colored rectangle (use "cursor" character) */ @@ -276,17 +294,9 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text, font_width, font_height, dst_x, dst_y); } -#if defined(TARGET_SDL) /* second step: draw masked inverted character */ SDLCopyInverseMasked(src_bitmap, dst_bitmap, src_x, src_y, font_width, font_height, dst_x, dst_y); -#else - /* second step: draw masked black rectangle (use "space" character) */ - SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc, - dst_x - src_x, dst_y - src_y); - BlitBitmapMasked(src_bitmap, dst_bitmap, 0, 0, - font_width, font_height, dst_x, dst_y); -#endif } else if (mask_mode == BLIT_MASKED || mask_mode == BLIT_ON_BACKGROUND) { @@ -297,18 +307,8 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text, font_width, font_height); } -#if defined(TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND) - /* use special font tile clipmasks */ - { - int font_pos = getFontCharPosition(font_nr, c); - - SetClipMask(src_bitmap, font_clip_gc, font->clip_mask[font_pos]); - SetClipOrigin(src_bitmap, font_clip_gc, dst_x, dst_y); - } -#else SetClipOrigin(src_bitmap, src_bitmap->stored_clip_gc, dst_x - src_x, dst_y - src_y); -#endif BlitBitmapMasked(src_bitmap, dst_bitmap, src_x, src_y, font_width, font_height, dst_x, dst_y); @@ -322,3 +322,340 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text, dst_x += font_width; } } + + +/* ========================================================================= */ +/* text buffer drawing functions */ +/* ========================================================================= */ + +#define MAX_LINES_FROM_FILE 1024 + +char *GetTextBufferFromFile(char *filename, int max_lines) +{ + File *file; + char *buffer; + int num_lines = 0; + + if (filename == NULL) + return NULL; + + if (!(file = openFile(filename, MODE_READ))) + return NULL; + + buffer = checked_calloc(1); /* start with valid, but empty text buffer */ + + while (!checkEndOfFile(file) && num_lines < max_lines) + { + char line[MAX_LINE_LEN]; + + /* read next line of input file */ + if (!getStringFromFile(file, line, MAX_LINE_LEN)) + break; + + buffer = checked_realloc(buffer, strlen(buffer) + strlen(line) + 1); + + strcat(buffer, line); + + num_lines++; + } + + closeFile(file); + + return buffer; +} + +static boolean RenderLineToBuffer(char **src_buffer_ptr, char *dst_buffer, + int *dst_buffer_len, int line_length, + boolean last_line_was_empty) +{ + char *text_ptr = *src_buffer_ptr; + char *buffer = dst_buffer; + int buffer_len = *dst_buffer_len; + boolean buffer_filled = FALSE; + + while (*text_ptr) + { + char *word_ptr; + int word_len; + + /* skip leading whitespaces */ + while (*text_ptr == ' ' || *text_ptr == '\t') + text_ptr++; + + word_ptr = text_ptr; + word_len = 0; + + /* look for end of next word */ + while (*word_ptr != ' ' && *word_ptr != '\t' && *word_ptr != '\0') + { + word_ptr++; + word_len++; + } + + if (word_len == 0) + { + continue; + } + else if (*text_ptr == '\n') /* special case: force empty line */ + { + if (buffer_len == 0) + text_ptr++; + + /* prevent printing of multiple empty lines */ + if (buffer_len > 0 || !last_line_was_empty) + buffer_filled = TRUE; + } + else if (word_len < line_length - buffer_len) + { + /* word fits into text buffer -- add word */ + + if (buffer_len > 0) + buffer[buffer_len++] = ' '; + + strncpy(&buffer[buffer_len], text_ptr, word_len); + buffer_len += word_len; + buffer[buffer_len] = '\0'; + text_ptr += word_len; + } + else if (buffer_len > 0) + { + /* not enough space left for word in text buffer -- print buffer */ + + buffer_filled = TRUE; + } + else + { + /* word does not fit at all into empty text buffer -- cut word */ + + strncpy(buffer, text_ptr, line_length); + buffer[line_length] = '\0'; + text_ptr += line_length; + buffer_filled = TRUE; + } + + if (buffer_filled) + break; + } + + *src_buffer_ptr = text_ptr; + *dst_buffer_len = buffer_len; + + return buffer_filled; +} + +static boolean getCheckedTokenValueFromString(char *string, char **token, + char **value) +{ + char *ptr; + + if (!getTokenValueFromString(string, token, value)) + return FALSE; + + if (**token != '.') /* token should begin with dot */ + return FALSE; + + for (ptr = *token; *ptr; ptr++) /* token should contain no whitespace */ + if (*ptr == ' ' || *ptr == '\t') + return FALSE; + + for (ptr = *value; *ptr; ptr++) /* value should contain no whitespace */ + if (*ptr == ' ' || *ptr == '\t') + return FALSE; + + return TRUE; +} + +static void DrawTextBuffer_Flush(int x, int y, char *buffer, int font_nr, + int line_length, int cut_length, + int line_spacing, int mask_mode, + boolean centered, int current_line) +{ + int buffer_len = strlen(buffer); + int font_width = getFontWidth(font_nr); + int font_height = getFontHeight(font_nr); + int offset_chars = (centered ? (line_length - buffer_len) / 2 : 0); + int offset_xsize = + (centered ? font_width * (line_length - buffer_len) / 2 : 0); + int final_cut_length = MAX(0, cut_length - offset_chars); + int xx = x + offset_xsize; + int yy = y + current_line * (font_height + line_spacing); + + buffer[final_cut_length] = '\0'; + + if (mask_mode != -1) + DrawTextExt(drawto, xx, yy, buffer, font_nr, mask_mode); + else + DrawText(xx, yy, buffer, font_nr); +} + +int DrawTextBuffer(int x, int y, char *text_buffer, int font_nr, + int line_length, int cut_length, int max_lines, + int line_spacing, int mask_mode, boolean autowrap, + boolean centered, boolean parse_comments) +{ + char buffer[line_length + 1]; + int buffer_len; + int current_line = 0; + + if (text_buffer == NULL || *text_buffer == '\0') + return 0; + + if (current_line >= max_lines) + return 0; + + if (cut_length == -1) + cut_length = line_length; + + buffer[0] = '\0'; + buffer_len = 0; + + while (*text_buffer && current_line < max_lines) + { + char line[MAX_LINE_LEN + 1]; + char *line_ptr; + boolean last_line_was_empty = TRUE; + int num_line_chars = MAX_LINE_LEN; + int i; + + /* copy next line from text buffer to line buffer (nearly fgets() style) */ + for (i = 0; i < num_line_chars && *text_buffer; i++) + if ((line[i] = *text_buffer++) == '\n') + break; + line[i] = '\0'; + + /* prevent 'num_line_chars' sized lines to cause additional empty line */ + if (i == num_line_chars && *text_buffer == '\n') + text_buffer++; + + /* skip comments (lines directly beginning with '#') */ + if (line[0] == '#' && parse_comments) + { + char *token, *value; + + /* try to read generic token/value pair definition after comment sign */ + if (getCheckedTokenValueFromString(line + 1, &token, &value)) + { + /* if found, flush the current buffer, if non-empty */ + if (buffer_len > 0 && current_line < max_lines) + { + DrawTextBuffer_Flush(x, y, buffer, font_nr, line_length, cut_length, + line_spacing, mask_mode, centered, current_line); + + current_line++; + + buffer[0] = '\0'; + buffer_len = 0; + } + + if (strEqual(token, ".font")) + font_nr = gfx.get_font_from_token_function(value); + else if (strEqual(token, ".autowrap")) + autowrap = get_boolean_from_string(value); + else if (strEqual(token, ".centered")) + centered = get_boolean_from_string(value); + else if (strEqual(token, ".parse_comments")) + parse_comments = get_boolean_from_string(value); + } + + continue; + } + + /* cut trailing newline and carriage return from input line */ + for (line_ptr = line; *line_ptr; line_ptr++) + { + if (*line_ptr == '\n' || *line_ptr == '\r') + { + *line_ptr = '\0'; + break; + } + } + + if (strlen(line) == 0) /* special case: force empty line */ + strcpy(line, "\n"); + + line_ptr = line; + + while (*line_ptr && current_line < max_lines) + { + boolean buffer_filled; + + if (autowrap) + { + buffer_filled = RenderLineToBuffer(&line_ptr, buffer, &buffer_len, + line_length, last_line_was_empty); + } + else + { + if (strlen(line_ptr) <= line_length) + { + buffer_len = strlen(line_ptr); + strcpy(buffer, line_ptr); + } + else + { + buffer_len = line_length; + strncpy(buffer, line_ptr, line_length); + } + + buffer[buffer_len] = '\0'; + line_ptr += buffer_len; + + buffer_filled = TRUE; + } + + if (buffer_filled) + { + DrawTextBuffer_Flush(x, y, buffer, font_nr, line_length, cut_length, + line_spacing, mask_mode, centered, current_line); + current_line++; + + last_line_was_empty = (buffer_len == 0); + + buffer[0] = '\0'; + buffer_len = 0; + } + } + } + + if (buffer_len > 0 && current_line < max_lines) + { + DrawTextBuffer_Flush(x, y, buffer, font_nr, line_length, cut_length, + line_spacing, mask_mode, centered, current_line); + current_line++; + } + + return current_line; +} + +int DrawTextBufferVA(int x, int y, char *format, va_list ap, int font_nr, + int line_length, int cut_length, int max_lines, + int line_spacing, int mask_mode, boolean autowrap, + boolean centered, boolean parse_comments) +{ + char text_buffer[MAX_OUTPUT_LINESIZE]; + int text_length = vsnprintf(text_buffer, MAX_OUTPUT_LINESIZE, format, ap); + + if (text_length >= MAX_OUTPUT_LINESIZE) + Error(ERR_WARN, "string too long in DrawTextBufferVA() -- truncated"); + + int num_lines_printed = DrawTextBuffer(x, y, text_buffer, font_nr, + line_length, cut_length, max_lines, + line_spacing, mask_mode, autowrap, + centered, parse_comments); + return num_lines_printed; +} + +int DrawTextFile(int x, int y, char *filename, int font_nr, + int line_length, int cut_length, int max_lines, + int line_spacing, int mask_mode, boolean autowrap, + boolean centered, boolean parse_comments) +{ + char *text_buffer = GetTextBufferFromFile(filename, MAX_LINES_FROM_FILE); + int num_lines_printed = DrawTextBuffer(x, y, text_buffer, font_nr, + line_length, cut_length, max_lines, + line_spacing, mask_mode, autowrap, + centered, parse_comments); + checked_free(text_buffer); + + return num_lines_printed; +}