introduced first pass version of character start measuring
This commit is contained in:
Allen Webster
parent
fcd6f703b4
commit
249c6f5e4a
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@ -944,19 +944,15 @@ CUSTOM_COMMAND_SIG(page_down){
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CUSTOM_COMMAND_SIG(move_left){
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uint32_t access = AccessProtected;
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View_Summary view = get_active_view(app, access);
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int32_t new_pos = view.cursor.pos - 1;
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view_set_cursor(app, &view,
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seek_pos(new_pos),
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true);
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int32_t new_pos = view.cursor.character_pos - 1;
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view_set_cursor(app, &view, seek_character_pos(new_pos), 1);
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}
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CUSTOM_COMMAND_SIG(move_right){
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uint32_t access = AccessProtected;
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View_Summary view = get_active_view(app, access);
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int32_t new_pos = view.cursor.pos + 1;
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view_set_cursor(app, &view,
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seek_pos(new_pos),
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true);
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int32_t new_pos = view.cursor.character_pos + 1;
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view_set_cursor(app, &view, seek_character_pos(new_pos), 1);
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}
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//
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53
4ed_file.cpp
53
4ed_file.cpp
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@ -110,6 +110,9 @@ struct Editing_File_State{
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f32 *wraps;
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i32 wrap_max;
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i32 *character_starts;
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i32 character_start_max;
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Undo_Data undo;
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Cpp_Token_Array token_array;
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@ -329,54 +332,6 @@ edit_pos_get_new(Editing_File *file, i32 index){
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return(result);
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}
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//
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// Buffer Metadata Measuring
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//
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internal void
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file_measure_starts(System_Functions *system, General_Memory *general, Buffer_Type *buffer){
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if (!buffer->line_starts){
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i32 max = buffer->line_max = Kbytes(1);
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buffer->line_starts = (i32*)general_memory_allocate(general, max*sizeof(i32));
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TentativeAssert(buffer->line_starts);
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// TODO(allen): when unable to allocate?
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}
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Buffer_Measure_Starts state = {0};
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while (buffer_measure_starts(&state, buffer)){
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i32 count = state.count;
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i32 max = buffer->line_max;
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max = ((max + 1) << 1);
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{
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i32 *new_lines = (i32*)general_memory_reallocate(
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general, buffer->line_starts, sizeof(i32)*count, sizeof(i32)*max);
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// TODO(allen): when unable to grow?
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TentativeAssert(new_lines);
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buffer->line_starts = new_lines;
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buffer->line_max = max;
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}
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}
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buffer->line_count = state.count;
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}
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internal i32
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file_compute_lowest_line(Editing_File *file, f32 font_height){
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i32 lowest_line = 0;
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Buffer_Type *buffer = &file->state.buffer;
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if (file->settings.unwrapped_lines){
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lowest_line = buffer->line_count - 1;
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}
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else{
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f32 term_line_y = file->state.wraps[buffer->line_count];
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lowest_line = CEIL32((term_line_y/font_height) - 1);
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}
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return(lowest_line);
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}
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//
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// File Cursor Seeking
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//
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@ -415,8 +370,6 @@ file_compute_partial_cursor(Editing_File *file, Buffer_Seek seek, Partial_Cursor
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return(result);
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}
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//
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// Working_Set stuff
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//
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@ -448,6 +448,22 @@ view_compute_max_target_y(i32 lowest_line, i32 line_height, f32 view_height){
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return(CEIL32(max_target_y));
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}
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internal i32
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file_compute_lowest_line(Editing_File *file, f32 font_height){
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i32 lowest_line = 0;
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Buffer_Type *buffer = &file->state.buffer;
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if (file->settings.unwrapped_lines){
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lowest_line = buffer->line_count;
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}
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else{
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f32 term_line_y = file->state.wraps[buffer->line_count];
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lowest_line = CEIL32(term_line_y/font_height);
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}
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return(lowest_line);
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}
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inline i32
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view_compute_max_target_y(View *view){
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i32 line_height = view->line_height;
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@ -848,34 +864,83 @@ file_update_cursor_positions(Models *models, Editing_File *file){
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}
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}
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// NOTE(allen): This call assumes that the buffer's line starts are already correct,
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//
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// File Metadata Measuring
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//
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internal void
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file_measure_starts(System_Functions *system, General_Memory *general, Buffer_Type *buffer){
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if (!buffer->line_starts){
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i32 max = buffer->line_max = Kbytes(1);
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buffer->line_starts = (i32*)general_memory_allocate(general, max*sizeof(i32));
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TentativeAssert(buffer->line_starts);
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// TODO(allen): when unable to allocate?
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}
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Buffer_Measure_Starts state = {0};
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while (buffer_measure_starts(&state, buffer)){
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i32 count = state.count;
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i32 max = buffer->line_max;
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max = ((max + 1) << 1);
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{
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i32 *new_lines = (i32*)general_memory_reallocate(
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general, buffer->line_starts, sizeof(i32)*count, sizeof(i32)*max);
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// TODO(allen): when unable to grow?
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TentativeAssert(new_lines);
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buffer->line_starts = new_lines;
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buffer->line_max = max;
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}
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}
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buffer->line_count = state.count;
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}
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// NOTE(allen): These calls assumes that the buffer's line starts are already correct,
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// and that the buffer's line_count is correct.
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internal void
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file_allocate_metadata_as_needed(General_Memory *general, Buffer_Type *buffer,
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void **mem, i32 *mem_max_count, i32 item_size){
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if (*mem == 0){
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i32 max = ((buffer->line_count+1)*2);
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max = (max+(0x3FF))&(~(0x3FF));
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*mem = general_memory_allocate(general, max*item_size);
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*mem_max_count = max;
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}
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else if (*mem_max_count < buffer->line_count){
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i32 old_max = *mem_max_count;
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i32 max = ((buffer->line_count+1)*2);
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max = (max+(0x3FF))&(~(0x3FF));
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void *new_mem = general_memory_reallocate(general, *mem, item_size*old_max, item_size*max);
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TentativeAssert(new_mem);
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*mem = new_mem;
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*mem_max_count = max;
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}
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}
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inline void
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file_allocate_character_starts_as_needed(General_Memory *general, Editing_File *file){
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file_allocate_metadata_as_needed(general, &file->state.buffer,
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(void**)&file->state.character_starts,
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&file->state.character_start_max, sizeof(i32));
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}
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internal void
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file_measure_character_starts(Models *models, Editing_File *file){
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file_allocate_character_starts_as_needed(&models->mem.general, file);
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buffer_measure_character_starts(&file->state.buffer, file->state.character_starts, 0, 1);
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file_update_cursor_positions(models, file);
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}
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inline void
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file_allocate_wraps_as_needed(General_Memory *general, Editing_File *file){
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Buffer_Type *buffer = &file->state.buffer;
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if (file->state.wraps == 0){
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i32 max = ((buffer->line_count+1)*2);
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max = (max+(0x1FF))&(~(0x1FF));
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file->state.wraps = (f32*)general_memory_allocate(general, max*sizeof(f32));
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file->state.wrap_max = max;
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}
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else if (file->state.wrap_max < buffer->line_count){
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i32 old_max = file->state.wrap_max;
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i32 max = ((buffer->line_count+1)*2);
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max = (max+(0x1FF))&(~(0x1FF));
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f32 *new_wraps = (f32*)general_memory_reallocate(
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general, file->state.wraps, sizeof(f32)*old_max, sizeof(f32)*max);
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TentativeAssert(new_wraps);
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file->state.wraps = new_wraps;
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file->state.wrap_max = max;
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}
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file_allocate_metadata_as_needed(general, &file->state.buffer,
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(void**)&file->state.wraps,
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&file->state.wrap_max, sizeof(f32));
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}
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// NOTE(allen): This call assumes that the buffer's line starts are already correct,
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// and that the buffer's line_count is correct.
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internal void
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file_measure_wraps(Models *models, Editing_File *file, f32 font_height, f32 *adv){
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file_allocate_wraps_as_needed(&models->mem.general, file);
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@ -884,14 +949,16 @@ file_measure_wraps(Models *models, Editing_File *file, f32 font_height, f32 *adv
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file_update_cursor_positions(models, file);
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}
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// NOTE(allen): This call assumes that the buffer's line starts are already correct,
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// and that the buffer's line_count is correct.
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internal void
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file_set_display_width(Models *models, Editing_File *file, i32 display_width, f32 font_height, f32 *adv){
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file->settings.display_width = display_width;
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file_measure_wraps(models, file, font_height, adv);
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}
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//
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//
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//
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internal void
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file_create_from_string(System_Functions *system, Models *models,
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Editing_File *file, String val, b8 read_only = 0){
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@ -922,8 +989,12 @@ file_create_from_string(System_Functions *system, Models *models,
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}
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file_synchronize_times(system, file);
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// TODO(allen): batch some of these together so we can avoid
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// making so many passes over the buffer?
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file_measure_starts(system, general, &file->state.buffer);
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file_measure_character_starts(models, file);
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i16 font_id = models->global_font.font_id;
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file->settings.font_id = font_id;
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Render_Font *font = get_font_info(font_set, font_id)->font;
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@ -1983,6 +2054,10 @@ file_do_single_edit(System_Functions *system,
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file_grow_starts_as_needed(general, buffer, line_shift);
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buffer_remeasure_starts(buffer, line_start, line_end, line_shift, shift_amount);
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// TODO(allen): write the remeasurement version
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file_allocate_character_starts_as_needed(general, file);
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buffer_measure_character_starts(buffer, file->state.character_starts, 0, 1);
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file_allocate_wraps_as_needed(general, file);
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buffer_remeasure_wrap_y(buffer, line_start, line_end, line_shift,
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file->state.wraps, (f32)font->height, font->advance_data,
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@ -2049,6 +2124,9 @@ file_do_batch_edit(System_Functions *system, Models *models, Editing_File *file,
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Buffer_Measure_Starts measure_state = {};
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buffer_measure_starts(&measure_state, &file->state.buffer);
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// TODO(allen): write the remeasurement version
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file_measure_character_starts(models, file);
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Render_Font *font = get_font_info(models->font_set, file->settings.font_id)->font;
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file_measure_wraps(models, file, (f32)font->height, font->advance_data);
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@ -129,7 +129,6 @@ buffer_measure_starts(Buffer_Measure_Starts *state, Buffer_Type *buffer){
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return(result);
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}
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#if 0
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internal_4tech void
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buffer_measure_character_starts(Buffer_Type *buffer, i32 *character_starts, i32 mode, i32 virtual_whitespace){
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assert_4tech(mode == 0);
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@ -139,8 +138,32 @@ buffer_measure_character_starts(Buffer_Type *buffer, i32 *character_starts, i32
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i32 size = buffer_size(buffer);
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i32 line_index = 0;
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i32 character_index = 0;
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character_starts[line_index++] = character_index;
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if (buffer_stringify_loop(&stream, buffer, i, size)){
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b32 still_looping = 0;
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do{
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for (; i < stream.end; ++i){
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u8 ch = (u8)stream.data[i];
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if (ch == '\n'){
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++character_index;
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character_starts[line_index++] = character_index;
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}
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else{
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++character_index;
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}
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}
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still_looping = buffer_stringify_next(&stream);
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}while(still_looping);
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}
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++character_index;
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character_starts[line_index++] = character_index;
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assert_4tech(line_index-1 == buffer->line_count);
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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, f32 font_height, f32 *adv, f32 max_width){
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