968 lines
28 KiB
C++
968 lines
28 KiB
C++
/*
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* Mr. 4th Dimention - Allen Webster
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*
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* 24.10.2015
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*
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* Buffer features based on the stringify loop,
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* and other abstract buffer features.
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*
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*/
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// TOP
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#define Buffer_Init_Type cat_4tech(Buffer_Type, _Init)
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#define Buffer_Stringify_Type cat_4tech(Buffer_Type, _Stringify_Loop)
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inline_4tech void
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buffer_stringify(Buffer_Type *buffer, i32 start, i32 end, char *out){
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for (Buffer_Stringify_Type loop = buffer_stringify_loop(buffer, start, end);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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memcpy_4tech(out, loop.data, loop.size);
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out += loop.size;
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}
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}
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internal_4tech i32
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buffer_convert_out(Buffer_Type *buffer, char *dest, i32 max){
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Buffer_Stringify_Type loop;
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i32 size, out_size, pos, result;
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size = buffer_size(buffer);
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assert_4tech(size + buffer->line_count <= max);
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pos = 0;
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for (loop = buffer_stringify_loop(buffer, 0, size);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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result = eol_convert_out(dest + pos, max - pos, loop.data, loop.size, &out_size);
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assert_4tech(result);
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pos += out_size;
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}
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return(pos);
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}
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internal_4tech i32
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buffer_count_newlines(Buffer_Type *buffer, i32 start, i32 end){
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Buffer_Stringify_Type loop;
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i32 i;
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i32 count;
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assert_4tech(0 <= start);
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assert_4tech(start <= end);
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assert_4tech(end <= buffer_size(buffer));
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count = 0;
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for (loop = buffer_stringify_loop(buffer, start, end);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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for (i = 0; i < loop.size; ++i){
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count += (loop.data[i] == '\n');
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}
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}
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return(count);
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}
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typedef struct Buffer_Measure_Starts{
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i32 i;
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i32 count;
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i32 start;
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f32 width;
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} Buffer_Measure_Starts;
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internal_4tech i32
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buffer_measure_starts_widths_(Buffer_Measure_Starts *state, Buffer_Type *buffer, f32 *advance_data){
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Buffer_Stringify_Type loop;
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i32 *start_ptr, *start_end;
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f32 *width_ptr;
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debug_4tech(i32 widths_max);
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debug_4tech(i32 max);
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char *data;
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i32 size, end;
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f32 width;
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i32 start, i;
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i32 result;
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char ch;
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size = buffer_size(buffer);
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debug_4tech(max = buffer->line_max);
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debug_4tech(widths_max = buffer->widths_max);
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assert_4tech(max == widths_max);
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result = 1;
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i = state->i;
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start = state->start;
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width = state->width;
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start_ptr = buffer->line_starts + state->count;
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width_ptr = buffer->line_widths + state->count;
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start_end = buffer->line_starts + buffer->line_max;
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for (loop = buffer_stringify_loop(buffer, i, size);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; i < end; ++i){
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ch = data[i];
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if (ch == '\n'){
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if (start_ptr == start_end) goto buffer_measure_starts_widths_end;
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*width_ptr++ = width;
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*start_ptr++ = start;
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start = i + 1;
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width = 0;
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}
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else{
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width += measure_character(advance_data, ch);
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}
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}
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}
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assert_4tech(i == size);
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if (start_ptr == start_end) goto buffer_measure_starts_widths_end;
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*start_ptr++ = start;
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*width_ptr++ = 0;
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result = 0;
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buffer_measure_starts_widths_end:
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state->i = i;
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state->count = (i32)(start_ptr - buffer->line_starts);
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state->start = start;
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state->width = width;
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return(result);
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}
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internal_4tech i32
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buffer_measure_starts_zero_widths_(Buffer_Measure_Starts *state, Buffer_Type *buffer){
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Buffer_Stringify_Type loop;
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i32 *start_ptr, *start_end;
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f32 *width_ptr;
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debug_4tech(i32 widths_max);
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debug_4tech(i32 max);
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char *data;
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i32 size, end;
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i32 start, i;
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i32 result;
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char ch;
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size = buffer_size(buffer);
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debug_4tech(max = buffer->line_max);
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debug_4tech(widths_max = buffer->widths_max);
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assert_4tech(max == widths_max);
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result = 1;
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i = state->i;
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start = state->start;
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start_ptr = buffer->line_starts + state->count;
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width_ptr = buffer->line_widths + state->count;
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start_end = buffer->line_starts + buffer->line_max;
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for (loop = buffer_stringify_loop(buffer, i, size);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; i < end; ++i){
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ch = data[i];
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if (ch == '\n'){
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if (start_ptr == start_end) goto buffer_measure_starts_zero_widths_end;
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*width_ptr++ = 0;
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*start_ptr++ = start;
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start = i + 1;
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}
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}
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}
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assert_4tech(i == size);
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if (start_ptr == start_end) goto buffer_measure_starts_zero_widths_end;
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*start_ptr++ = start;
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*width_ptr++ = 0;
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result = 0;
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buffer_measure_starts_zero_widths_end:
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state->i = i;
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state->count = (i32)(start_ptr - buffer->line_starts);
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state->start = start;
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return(result);
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}
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internal_4tech i32
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buffer_measure_starts_widths(Buffer_Measure_Starts *state, Buffer_Type *buffer, f32 *advance_data){
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i32 result = 0;
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if (advance_data){
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result = buffer_measure_starts_widths_(state, buffer, advance_data);
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}
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else{
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result = buffer_measure_starts_zero_widths_(state, buffer);
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}
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return(result);
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}
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internal_4tech void
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buffer_remeasure_starts(Buffer_Type *buffer, i32 line_start, i32 line_end, i32 line_shift, i32 text_shift){
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Buffer_Stringify_Type loop;
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i32 *starts = buffer->line_starts;
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i32 line_count = buffer->line_count;
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char *data = 0;
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i32 size = 0, end = 0;
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i32 line_i = 0, char_i = 0, start = 0;
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assert_4tech(0 <= line_start);
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assert_4tech(line_start <= line_end);
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assert_4tech(line_end < line_count);
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assert_4tech(line_count + line_shift <= buffer->line_max);
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++line_end;
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if (text_shift != 0){
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line_i = line_end;
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starts += line_i;
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for (; line_i < line_count; ++line_i, ++starts){
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*starts += text_shift;
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}
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starts = buffer->line_starts;
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}
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if (line_shift != 0){
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memmove_4tech(starts + line_end + line_shift, starts + line_end,
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sizeof(i32)*(line_count - line_end));
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line_count += line_shift;
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}
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line_end += line_shift;
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size = buffer_size(buffer);
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char_i = starts[line_start];
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line_i = line_start;
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start = char_i;
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for (loop = buffer_stringify_loop(buffer, char_i, size);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; char_i < end; ++char_i){
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if (data[char_i] == '\n'){
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starts[line_i++] = start;
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start = char_i + 1;
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if (line_i >= line_end && start == starts[line_i]) goto buffer_remeasure_starts_end;
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}
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}
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}
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if (char_i == size){
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starts[line_i++] = start;
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}
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buffer_remeasure_starts_end:
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assert_4tech(line_count >= 1);
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buffer->line_count = line_count;
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}
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internal_4tech void
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buffer_remeasure_widths(Buffer_Type *buffer, f32 *advance_data,
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i32 line_start, i32 line_end, i32 line_shift){
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Buffer_Stringify_Type loop;
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i32 *starts = buffer->line_starts;
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f32 *widths = buffer->line_widths;
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i32 line_count = buffer->line_count;
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i32 widths_count = buffer->widths_count;
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char *data = 0;
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i32 size = 0, end = 0;
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i32 i = 0, j = 0;
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f32 width = 0;
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char ch = 0;
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assert_4tech(0 <= line_start);
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assert_4tech(line_start <= line_end);
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assert_4tech(line_count <= buffer->widths_max);
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++line_end;
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if (line_shift != 0){
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memmove_4tech(widths + line_end + line_shift, widths + line_end,
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sizeof(f32)*(widths_count - line_end));
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}
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buffer->widths_count = line_count;
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line_end += line_shift;
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i = line_start;
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j = starts[i];
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if (line_end == line_count) size = buffer_size(buffer);
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else size = starts[line_end];
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width = 0;
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for (loop = buffer_stringify_loop(buffer, j, size);
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buffer_stringify_good(&loop);
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buffer_stringify_next(&loop)){
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end = loop.size + loop.absolute_pos;
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data = loop.data - loop.absolute_pos;
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for (; j < end; ++j){
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ch = data[j];
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if (ch == '\n'){
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widths[i] = width;
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++i;
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assert_4tech(j + 1 == starts[i]);
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width = 0;
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}
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else{
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width += measure_character(advance_data, ch);
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}
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}
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}
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if (j == buffer_size(buffer)){
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widths[i] = width;
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assert_4tech(i+1 == line_count);
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}
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}
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#if 0
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inline_4tech void
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buffer_measure_widths(Buffer_Type *buffer, void *advance_data){
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assert_4tech(buffer->line_count >= 1);
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buffer_remeasure_widths(buffer, advance_data, 0, buffer->line_count-1, 0);
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}
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#endif
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internal_4tech void
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buffer_measure_wrap_y(Buffer_Type *buffer, f32 *wraps,
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f32 font_height, f32 max_width){
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f32 *widths;
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f32 y_pos;
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i32 i, line_count;
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line_count = buffer->line_count;
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widths = buffer->line_widths;
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y_pos = 0;
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for (i = 0; i < line_count; ++i){
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wraps[i] = y_pos;
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if (widths[i] == 0) y_pos += font_height;
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else y_pos += font_height*ceil_4tech(widths[i]/max_width);
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}
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}
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internal_4tech i32
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buffer_get_line_index_range(Buffer_Type *buffer, i32 pos, i32 l_bound, i32 u_bound){
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i32 *lines;
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i32 start, end;
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i32 i;
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assert_4tech(0 <= l_bound);
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assert_4tech(l_bound <= u_bound);
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assert_4tech(u_bound <= buffer->line_count);
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lines = buffer->line_starts;
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assert_4tech(lines != 0);
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start = l_bound;
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end = u_bound;
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for (;;){
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i = (start + end) >> 1;
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if (lines[i] < pos) start = i;
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else if (lines[i] > pos) end = i;
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else{
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start = i;
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break;
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}
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assert_4tech(start < end);
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if (start == end - 1) break;
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}
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return(start);
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}
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inline_4tech i32
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buffer_get_line_index(Buffer_Type *buffer, i32 pos){
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i32 result = buffer_get_line_index_range(buffer, pos, 0, buffer->line_count);
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return(result);
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}
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internal_4tech i32
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buffer_get_line_index_from_wrapped_y(f32 *wraps, f32 y, f32 font_height, i32 l_bound, i32 u_bound){
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i32 start, end, i, result;
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start = l_bound;
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end = u_bound;
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for (;;){
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i = (start + end) / 2;
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if (wraps[i]+font_height <= y) start = i;
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else if (wraps[i] > y) end = i;
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else{
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result = i;
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break;
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}
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if (start >= end - 1){
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result = start;
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break;
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}
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}
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return(result);
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}
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typedef struct Seek_State{
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Full_Cursor cursor;
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Full_Cursor prev_cursor;
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} Seek_State;
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internal_4tech i32
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cursor_seek_step(Seek_State *state, Buffer_Seek seek, i32 xy_seek, f32 max_width,
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f32 font_height, f32 *adv, i32 size, uint8_t ch){
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Full_Cursor cursor = state->cursor;
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Full_Cursor prev_cursor = cursor;
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f32 ch_width;
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i32 result = 1;
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f32 x, px, y;
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switch (ch){
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case '\n':
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++cursor.line;
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cursor.unwrapped_y += font_height;
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cursor.wrapped_y += font_height;
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cursor.character = 1;
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cursor.unwrapped_x = 0;
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cursor.wrapped_x = 0;
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break;
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default:
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++cursor.character;
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ch_width = adv[ch];
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if (cursor.wrapped_x + ch_width >= max_width){
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cursor.wrapped_y += font_height;
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cursor.wrapped_x = 0;
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prev_cursor = cursor;
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}
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cursor.unwrapped_x += ch_width;
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cursor.wrapped_x += ch_width;
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break;
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}
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|
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++cursor.pos;
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if (cursor.pos > size){
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cursor = prev_cursor;
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result = 0;
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goto cursor_seek_step_end;
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}
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|
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x = y = px = 0;
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|
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switch (seek.type){
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case buffer_seek_pos:
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if (cursor.pos > seek.pos){
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cursor = prev_cursor;
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result = 0;
|
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goto cursor_seek_step_end;
|
|
}break;
|
|
|
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case buffer_seek_wrapped_xy:
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x = cursor.wrapped_x; px = prev_cursor.wrapped_x;
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y = cursor.wrapped_y; break;
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|
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case buffer_seek_unwrapped_xy:
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x = cursor.unwrapped_x; px = prev_cursor.unwrapped_x;
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y = cursor.unwrapped_y; break;
|
|
|
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case buffer_seek_line_char:
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if (cursor.line == seek.line && cursor.character >= seek.character){
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result = 0;
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goto cursor_seek_step_end;
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}
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else if (cursor.line > seek.line){
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cursor = prev_cursor;
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result = 0;
|
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goto cursor_seek_step_end;
|
|
}break;
|
|
}
|
|
|
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if (xy_seek){
|
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if (y > seek.y){
|
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cursor = prev_cursor;
|
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result = 0;
|
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goto cursor_seek_step_end;
|
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}
|
|
|
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if (y > seek.y - font_height && x >= seek.x){
|
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if (!seek.round_down){
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if (ch != '\n' && (seek.x - px) < (x - seek.x)) cursor = prev_cursor;
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result = 0;
|
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goto cursor_seek_step_end;
|
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}
|
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|
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if (x > seek.x){
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cursor = prev_cursor;
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result = 0;
|
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goto cursor_seek_step_end;
|
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}
|
|
}
|
|
}
|
|
|
|
cursor_seek_step_end:
|
|
state->cursor = cursor;
|
|
state->prev_cursor = prev_cursor;
|
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return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
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|
buffer_cursor_seek(Buffer_Type *buffer, Buffer_Seek seek, f32 max_width,
|
|
f32 font_height, f32 *adv, Full_Cursor cursor){
|
|
Buffer_Stringify_Type loop;
|
|
char *data;
|
|
i32 size, end;
|
|
i32 i;
|
|
i32 result;
|
|
|
|
Seek_State state;
|
|
i32 xy_seek;
|
|
|
|
state.cursor = cursor;
|
|
|
|
switch(seek.type){
|
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case buffer_seek_pos:
|
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if (cursor.pos >= seek.pos) goto buffer_cursor_seek_end;
|
|
break;
|
|
|
|
case buffer_seek_wrapped_xy:
|
|
if (seek.x == 0 && cursor.wrapped_y >= seek.y) goto buffer_cursor_seek_end;
|
|
break;
|
|
|
|
case buffer_seek_unwrapped_xy:
|
|
if (seek.x == 0 && cursor.unwrapped_y >= seek.y) goto buffer_cursor_seek_end;
|
|
break;
|
|
|
|
case buffer_seek_line_char:
|
|
if (cursor.line >= seek.line && cursor.character >= seek.character) goto buffer_cursor_seek_end;
|
|
break;
|
|
}
|
|
|
|
if (adv){
|
|
size = buffer_size(buffer);
|
|
xy_seek = (seek.type == buffer_seek_wrapped_xy || seek.type == buffer_seek_unwrapped_xy);
|
|
|
|
result = 1;
|
|
i = cursor.pos;
|
|
for (loop = buffer_stringify_loop(buffer, i, size);
|
|
buffer_stringify_good(&loop);
|
|
buffer_stringify_next(&loop)){
|
|
end = loop.size + loop.absolute_pos;
|
|
data = loop.data - loop.absolute_pos;
|
|
for (; i < end; ++i){
|
|
result = cursor_seek_step(&state, seek, xy_seek, max_width,
|
|
font_height, adv, size, data[i]);
|
|
if (!result) goto buffer_cursor_seek_end;
|
|
}
|
|
}
|
|
if (result){
|
|
result = cursor_seek_step(&state, seek, xy_seek, max_width,
|
|
font_height, adv, size, 0);
|
|
assert_4tech(result == 0);
|
|
}
|
|
}
|
|
|
|
buffer_cursor_seek_end:
|
|
return(state.cursor);
|
|
}
|
|
|
|
internal_4tech Partial_Cursor
|
|
buffer_partial_from_pos(Buffer_Type *buffer, i32 pos){
|
|
Partial_Cursor result = {0};
|
|
|
|
int32_t size = buffer_size(buffer);
|
|
if (pos > size){
|
|
pos = size;
|
|
}
|
|
if (pos < 0){
|
|
pos = 0;
|
|
}
|
|
|
|
i32 line_index = buffer_get_line_index_range(buffer, pos, 0, buffer->line_count);
|
|
result.pos = pos;
|
|
result.line = line_index+1;
|
|
result.character = pos - buffer->line_starts[line_index] + 1;
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_from_pos(Buffer_Type *buffer, i32 pos, f32 *wraps,
|
|
f32 max_width, f32 font_height, f32 *adv){
|
|
Full_Cursor result;
|
|
i32 line_index;
|
|
|
|
int32_t size = buffer_size(buffer);
|
|
if (pos > size){
|
|
pos = size;
|
|
}
|
|
if (pos < 0){
|
|
pos = 0;
|
|
}
|
|
|
|
line_index = buffer_get_line_index_range(buffer, pos, 0, buffer->line_count);
|
|
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
|
|
result = buffer_cursor_seek(buffer, seek_pos(pos), max_width, font_height, adv, result);
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Partial_Cursor
|
|
buffer_partial_from_line_character(Buffer_Type *buffer, i32 line, i32 character){
|
|
Partial_Cursor result = {0};
|
|
|
|
i32 line_index = line - 1;
|
|
if (line_index >= buffer->line_count) line_index = buffer->line_count - 1;
|
|
if (line_index < 0) line_index = 0;
|
|
|
|
int32_t size = buffer_size(buffer);
|
|
i32 this_start = buffer->line_starts[line_index];
|
|
i32 max_character = (size-this_start) + 1;
|
|
if (line_index+1 < buffer->line_count){
|
|
i32 next_start = buffer->line_starts[line_index+1];
|
|
max_character = (next_start-this_start);
|
|
}
|
|
|
|
if (character <= 0) character = 1;
|
|
if (character > max_character) character = max_character;
|
|
|
|
result.pos = this_start + character - 1;
|
|
result.line = line_index+1;
|
|
result.character = character;
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_from_line_character(Buffer_Type *buffer, i32 line, i32 character, f32 *wraps,
|
|
f32 max_width, f32 font_height, f32 *adv){
|
|
Full_Cursor result = {0};
|
|
|
|
i32 line_index = line - 1;
|
|
if (line_index >= buffer->line_count) line_index = buffer->line_count - 1;
|
|
if (line_index < 0) line_index = 0;
|
|
|
|
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
|
|
result = buffer_cursor_seek(buffer, seek_line_char(line, character),
|
|
max_width, font_height, adv, result);
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_from_unwrapped_xy(Buffer_Type *buffer, f32 x, f32 y, i32 round_down, f32 *wraps,
|
|
f32 max_width, f32 font_height, f32 *adv){
|
|
Full_Cursor result;
|
|
i32 line_index;
|
|
|
|
line_index = (i32)(y / font_height);
|
|
if (line_index >= buffer->line_count) line_index = buffer->line_count - 1;
|
|
if (line_index < 0) line_index = 0;
|
|
|
|
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
|
|
result = buffer_cursor_seek(buffer, seek_unwrapped_xy(x, y, round_down),
|
|
max_width, font_height, adv, result);
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_cursor_from_wrapped_xy(Buffer_Type *buffer, f32 x, f32 y, i32 round_down, f32 *wraps,
|
|
f32 max_width, f32 font_height, f32 *adv){
|
|
Full_Cursor result;
|
|
i32 line_index;
|
|
|
|
line_index = buffer_get_line_index_from_wrapped_y(wraps, y, font_height, 0, buffer->line_count);
|
|
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
|
|
result = buffer_cursor_seek(buffer, seek_wrapped_xy(x, y, round_down),
|
|
max_width, font_height, adv, result);
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech void
|
|
buffer_invert_edit_shift(Buffer_Type *buffer, Buffer_Edit edit, Buffer_Edit *inverse, char *strings,
|
|
i32 *str_pos, i32 max, i32 shift_amount){
|
|
i32 pos = *str_pos;
|
|
i32 len = edit.end - edit.start;
|
|
assert_4tech(pos >= 0);
|
|
assert_4tech(pos + len <= max);
|
|
*str_pos = pos + len;
|
|
|
|
inverse->str_start = pos;
|
|
inverse->len = len;
|
|
inverse->start = edit.start + shift_amount;
|
|
inverse->end = edit.start + edit.len + shift_amount;
|
|
buffer_stringify(buffer, edit.start, edit.end, strings + pos);
|
|
}
|
|
|
|
inline_4tech void
|
|
buffer_invert_edit(Buffer_Type *buffer, Buffer_Edit edit, Buffer_Edit *inverse, char *strings,
|
|
i32 *str_pos, i32 max){
|
|
buffer_invert_edit_shift(buffer, edit, inverse, strings, str_pos, max, 0);
|
|
}
|
|
|
|
typedef struct Buffer_Invert_Batch{
|
|
i32 i;
|
|
i32 shift_amount;
|
|
i32 len;
|
|
} Buffer_Invert_Batch;
|
|
|
|
internal_4tech i32
|
|
buffer_invert_batch(Buffer_Invert_Batch *state, Buffer_Type *buffer, Buffer_Edit *edits, i32 count,
|
|
Buffer_Edit *inverse, char *strings, i32 *str_pos, i32 max){
|
|
Buffer_Edit *edit, *inv_edit;
|
|
i32 shift_amount;
|
|
i32 result;
|
|
i32 i;
|
|
|
|
result = 0;
|
|
i = state->i;
|
|
shift_amount = state->shift_amount;
|
|
|
|
edit = edits + i;
|
|
inv_edit = inverse + i;
|
|
|
|
for (; i < count; ++i, ++edit, ++inv_edit){
|
|
if (*str_pos + edit->end - edit->start <= max){
|
|
buffer_invert_edit_shift(buffer, *edit, inv_edit, strings, str_pos, max, shift_amount);
|
|
shift_amount += (edit->len - (edit->end - edit->start));
|
|
}
|
|
else{
|
|
result = 1;
|
|
state->len = edit->end - edit->start;
|
|
}
|
|
}
|
|
|
|
state->i = i;
|
|
state->shift_amount = shift_amount;
|
|
|
|
return(result);
|
|
}
|
|
|
|
internal_4tech Full_Cursor
|
|
buffer_get_start_cursor(Buffer_Type *buffer, f32 *wraps, f32 scroll_y,
|
|
i32 wrapped, f32 width, f32 *adv, f32 font_height){
|
|
Full_Cursor result;
|
|
|
|
if (wrapped){
|
|
result = buffer_cursor_from_wrapped_xy(buffer, 0, scroll_y, 0, wraps,
|
|
width, font_height, adv);
|
|
}
|
|
else{
|
|
result = buffer_cursor_from_unwrapped_xy(buffer, 0, scroll_y, 0, wraps,
|
|
width, font_height, adv);
|
|
}
|
|
|
|
return(result);
|
|
}
|
|
|
|
enum Buffer_Render_Flag{
|
|
BRFlag_Special_Character = (1 << 0)
|
|
};
|
|
|
|
typedef struct Buffer_Render_Item{
|
|
i32 index;
|
|
u16 glyphid;
|
|
u16 flags;
|
|
f32 x0, y0;
|
|
f32 x1, y1;
|
|
} Buffer_Render_Item;
|
|
|
|
typedef struct Render_Item_Write{
|
|
Buffer_Render_Item *item;
|
|
f32 x, y;
|
|
f32 *adv;
|
|
f32 font_height;
|
|
} Render_Item_Write;
|
|
|
|
inline_4tech f32
|
|
write_render_item(Buffer_Render_Item *item,
|
|
i32 index, u16 glyphid, u16 flags,
|
|
f32 x, f32 y, f32 *adv, f32 h){
|
|
f32 ch_width = measure_character(adv, (char)glyphid);
|
|
item->index = index;
|
|
item->glyphid = glyphid;
|
|
item->flags = flags;
|
|
item->x0 = x;
|
|
item->y0 = y;
|
|
item->x1 = x + ch_width;
|
|
item->y1 = y + h;
|
|
return(ch_width);
|
|
}
|
|
|
|
inline_4tech f32
|
|
write_render_item(Render_Item_Write write, i32 index, u16 glyphid, u16 flags){
|
|
f32 w = write_render_item(write.item, index, glyphid, flags,
|
|
write.x, write.y, write.adv, write.font_height);
|
|
return(w);
|
|
}
|
|
|
|
internal_4tech void
|
|
buffer_get_render_data(Buffer_Type *buffer, Buffer_Render_Item *items, i32 max, i32 *count,
|
|
f32 port_x, f32 port_y,
|
|
f32 scroll_x, f32 scroll_y, Full_Cursor start_cursor,
|
|
i32 wrapped,
|
|
f32 width, f32 height,
|
|
f32 *adv, f32 font_height){
|
|
|
|
Buffer_Stringify_Type loop = {0};
|
|
char *data = 0;
|
|
i32 end = 0;
|
|
|
|
i32 size = buffer_size(buffer);
|
|
f32 shift_x = port_x - scroll_x, shift_y = port_y - scroll_y;
|
|
|
|
if (wrapped){
|
|
shift_y += start_cursor.wrapped_y;
|
|
}
|
|
else{
|
|
shift_y += start_cursor.unwrapped_y;
|
|
}
|
|
|
|
Buffer_Render_Item *item_end = items + max;
|
|
|
|
Render_Item_Write write;
|
|
write.item = items;
|
|
write.x = shift_x;
|
|
write.y = shift_y;
|
|
write.adv = adv;
|
|
write.font_height = font_height;
|
|
|
|
// TODO(allen): What's the plan for when there is not enough space to store
|
|
// more render items? It seems like we should be able to use the view_x
|
|
// to skip items that are not in view right? That way I think it would
|
|
// just always fit in the buffer.
|
|
if (adv){
|
|
for (loop = buffer_stringify_loop(buffer, start_cursor.pos, size);
|
|
buffer_stringify_good(&loop) && write.item < item_end;
|
|
buffer_stringify_next(&loop)){
|
|
|
|
end = loop.size + loop.absolute_pos;
|
|
data = loop.data - loop.absolute_pos;
|
|
|
|
for (i32 i = loop.absolute_pos; i < end; ++i){
|
|
uint8_t ch = (uint8_t)data[i];
|
|
f32 ch_width = measure_character(adv, ch);
|
|
|
|
if (ch_width + write.x > width + shift_x && wrapped && ch != '\n'){
|
|
write.x = shift_x;
|
|
write.y += font_height;
|
|
}
|
|
if (write.y > height + shift_y){
|
|
goto buffer_get_render_data_end;
|
|
}
|
|
|
|
switch (ch){
|
|
case '\n':
|
|
if (write.item < item_end){
|
|
write_render_item(write, i, ' ', 0);
|
|
++write.item;
|
|
write.x = shift_x;
|
|
write.y += font_height;
|
|
}
|
|
break;
|
|
|
|
case '\r':
|
|
if (write.item < item_end){
|
|
write.x += write_render_item(write, i, '\\', BRFlag_Special_Character);
|
|
++write.item;
|
|
|
|
if (write.item < item_end){
|
|
write.x += write_render_item(write, i, 'r', BRFlag_Special_Character);
|
|
++write.item;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case '\t':
|
|
if (write.item < item_end){
|
|
write_render_item(write, i, ' ', 0);
|
|
++write.item;
|
|
write.x += ch_width;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if (write.item < item_end){
|
|
if (ch >= ' ' && ch <= '~'){
|
|
write_render_item(write, i, ch, 0);
|
|
++write.item;
|
|
write.x += ch_width;
|
|
}
|
|
else{
|
|
write.x += write_render_item(write, i, '\\', BRFlag_Special_Character);
|
|
++write.item;
|
|
|
|
char C = '0' + (ch / 0x10);
|
|
if ((ch / 0x10) > 0x9){
|
|
C = ('A' - 0xA) + (ch / 0x10);
|
|
}
|
|
|
|
if (write.item < item_end){
|
|
write.x += write_render_item(write, i, C, BRFlag_Special_Character);
|
|
++write.item;
|
|
}
|
|
|
|
ch = (ch % 0x10);
|
|
C = '0' + ch;
|
|
if (ch > 0x9){
|
|
C = ('A' - 0xA) + ch;
|
|
}
|
|
|
|
if (write.item < item_end){
|
|
write.x += write_render_item(write, i, C, BRFlag_Special_Character);
|
|
++write.item;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (write.y > height + shift_y){
|
|
goto buffer_get_render_data_end;
|
|
}
|
|
}
|
|
}
|
|
|
|
buffer_get_render_data_end:;
|
|
if (write.y <= height + shift_y || write.item == items){
|
|
if (write.item < item_end){
|
|
write_render_item(write, size, ' ', 0);
|
|
++write.item;
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
f32 zero = 0;
|
|
write.adv = &zero;
|
|
|
|
if (write.item < item_end){
|
|
write_render_item(write, size, 0, 0);
|
|
++write.item;
|
|
}
|
|
}
|
|
|
|
*count = (i32)(write.item - items);
|
|
assert_4tech(*count <= max);
|
|
}
|
|
|
|
// BOTTOM
|
|
|