X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Flibgame%2Ftext.c;h=6446ffe21d9bf154ff00dc39351d647eeaf87148;hb=04cfb5daeff6cbceef152fc01ad5852407c0c918;hp=83be1dfc0213e972569fa708731c121dd8458bbb;hpb=462bca0782be497b984922afda26b5bf12bd3d75;p=rocksndiamonds.git diff --git a/src/libgame/text.c b/src/libgame/text.c index 83be1dfc..6446ffe2 100644 --- a/src/libgame/text.c +++ b/src/libgame/text.c @@ -185,6 +185,11 @@ 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; } + +/* ========================================================================= */ +/* simple text drawing functions */ +/* ========================================================================= */ + void DrawInitText(char *text, int ypos, int font_nr) { if (window != NULL && @@ -394,8 +399,49 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text, } } -void DrawTextToTextArea(int x, int y, char *text, int font_nr, int line_length, - int area_xsize, int area_ysize, int mask_mode) + +/* ========================================================================= */ +/* 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 = fopen(filename, MODE_READ))) + return NULL; + + buffer = checked_calloc(1); /* start with valid, but empty text buffer */ + + while (!feof(file) && num_lines < max_lines) + { + char line[MAX_LINE_LEN]; + + /* read next line of input file */ + if (!fgets(line, MAX_LINE_LEN, file)) + break; + + buffer = checked_realloc(buffer, strlen(buffer) + strlen(line) + 1); + + strcat(buffer, line); + + num_lines++; + } + + fclose(file); + + return buffer; +} + +void DrawTextToTextArea_OLD(int x, int y, char *text, int font_nr, int line_length, + int area_xsize, int area_ysize, int mask_mode) { int area_line = 0; int font_height = getFontHeight(font_nr); @@ -422,9 +468,9 @@ void DrawTextToTextArea(int x, int y, char *text, int font_nr, int line_length, redraw_mask |= REDRAW_FIELD; } -boolean RenderLineToBuffer(char **src_buffer_ptr, char *dst_buffer, - int *dst_buffer_len, boolean last_line_was_empty, - int line_length) +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; @@ -501,29 +547,32 @@ boolean RenderLineToBuffer(char **src_buffer_ptr, char *dst_buffer, return buffer_filled; } -void DrawTextWrapped(int x, int y, char *text, int font_nr, int line_length, - int max_lines) +#if 0 +void DrawTextWrapped_OLD(int x, int y, char *text, int font_nr, int line_length, + int max_lines) { char *text_ptr = text; - char buffer[line_length + 1]; - int buffer_len; int current_line = 0; int font_height = getFontHeight(font_nr); while (*text_ptr && current_line < max_lines) { + char buffer[line_length + 1]; + int buffer_len = 0; + buffer[0] = '\0'; - buffer_len = 0; - RenderLineToBuffer(&text_ptr, buffer, &buffer_len, TRUE, line_length); + RenderLineToBuffer(&text_ptr, buffer, &buffer_len, line_length, TRUE); DrawText(x, y + current_line * font_height, buffer, font_nr); current_line++; } } +#endif -int DrawTextFromFile(int x, int y, char *filename, int font_nr, - int line_length, int max_lines, boolean rewrap) +#if 0 +int DrawTextFromFile_OLD(int x, int y, char *filename, int font_nr, + int line_length, int max_lines, boolean wrap_text) { int font_height = getFontHeight(font_nr); char line[MAX_LINE_LEN]; @@ -577,12 +626,10 @@ int DrawTextFromFile(int x, int y, char *filename, int font_nr, #if 1 boolean buffer_filled; - if (rewrap) + if (wrap_text) { - buffer_filled = RenderLineToBuffer(&line_ptr, - buffer, &buffer_len, - last_line_was_empty, - line_length); + buffer_filled = RenderLineToBuffer(&line_ptr, buffer, &buffer_len, + line_length, last_line_was_empty); } else { @@ -603,10 +650,8 @@ int DrawTextFromFile(int x, int y, char *filename, int font_nr, buffer_filled = TRUE; } #else - boolean buffer_filled = RenderLineToBuffer(&line_ptr, - buffer, &buffer_len, - last_line_was_empty, - line_length); + boolean buffer_filled = RenderLineToBuffer(&line_ptr, buffer, &buffer_len, + line_length, last_line_was_empty); #endif if (buffer_filled) @@ -632,3 +677,258 @@ int DrawTextFromFile(int x, int y, char *filename, int font_nr, return current_line; } +#endif + +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 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; + + 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 mask_mode, boolean autowrap, boolean centered, + boolean skip_comments) +{ +#if 0 + int font_width = getFontWidth(font_nr); + int font_height = getFontHeight(font_nr); +#endif + 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; +#if 1 + int num_line_chars = MAX_LINE_LEN; +#else + int num_line_chars = (autowrap ? MAX_LINE_LEN : line_length); +#endif + 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] == '#' && skip_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, + mask_mode, centered, current_line); + + current_line++; + + buffer[0] = '\0'; + buffer_len = 0; + } + + 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, ".skip_comments")) + skip_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) + { +#if 1 + DrawTextBuffer_Flush(x, y, buffer, font_nr, line_length, cut_length, + mask_mode, centered, current_line); +#else + 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; + + buffer[final_cut_length] = '\0'; + + if (mask_mode != -1) + DrawTextExt(drawto, xx, y + current_line * font_height, buffer, + font_nr, mask_mode); + else + DrawText(xx, y + current_line * font_height, buffer, font_nr); +#endif + + current_line++; + + last_line_was_empty = (buffer_len == 0); + + buffer[0] = '\0'; + buffer_len = 0; + } + } + } + + if (buffer_len > 0 && current_line < max_lines) + { +#if 1 + DrawTextBuffer_Flush(x, y, buffer, font_nr, line_length, cut_length, + mask_mode, centered, current_line); +#else + 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; + + buffer[final_cut_length] = '\0'; + + if (mask_mode != -1) + DrawTextExt(drawto, xx, y + current_line * font_height, buffer, + font_nr, mask_mode); + else + DrawText(xx, y + current_line * font_height, buffer, font_nr); +#endif + + current_line++; + } + + return current_line; +} + +int DrawTextFile(int x, int y, char *filename, int font_nr, + int line_length, int cut_length, int max_lines, + int mask_mode, boolean autowrap, boolean centered, + boolean skip_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, + mask_mode, autowrap, centered, + skip_comments); + checked_free(text_buffer); + + return num_lines_printed; +} + +#if 0 +void DrawTextWrapped(int x, int y, char *text, int font_nr, int line_length, + int max_lines) +{ + DrawTextBuffer(x, y, text, font_nr, line_length, -1, max_lines, -1, TRUE, + FALSE, FALSE); +} + +void DrawTextToTextArea(int x, int y, char *text, int font_nr, int line_length, + int cut_length, int max_lines, int mask_mode) +{ + DrawTextBuffer(x, y, text, font_nr, line_length, cut_length, max_lines, + mask_mode, FALSE, FALSE, FALSE); +} +#endif