diff options
Diffstat (limited to 'buffer.c')
| -rw-r--r-- | buffer.c | 37 |
1 files changed, 29 insertions, 8 deletions
@@ -753,6 +753,11 @@ void buffer_render(TextBuffer *buffer, float x1, float y1, float x2, float y2) { char_height = text_font_char_height(font); float header_height = char_height; + // get screen coordinates of cursor + float cur_x1 = 0, cur_y1 = 0; + buffer_pos_to_pixels(buffer, buffer->cursor_pos, &cur_x1, &cur_y1); + cur_y1 += 0.2f * char_height; + u32 border_color = 0x7f7f7fff; // color of border around buffer // bounding box around buffer & header @@ -799,6 +804,19 @@ void buffer_render(TextBuffer *buffer, float x1, float y1, float x2, float y2) { glEnd(); + // highlight line cursor is on + { + gl_color1f(0.2f); // @SETTINGS + glBegin(GL_QUADS); + float line_y1 = cur_y1; + float line_y2 = cur_y1 + char_height; + glVertex2f(x1, line_y1); + glVertex2f(x2, line_y1); + glVertex2f(x2, line_y2); + glVertex2f(x1, line_y2); + glEnd(); + } + glColor3f(1,1,1); text_chars_begin(font); @@ -856,9 +874,6 @@ void buffer_render(TextBuffer *buffer, float x1, float y1, float x2, float y2) { text_chars_end(font); { // render cursor - float cur_x1, cur_y1; - buffer_pos_to_pixels(buffer, buffer->cursor_pos, &cur_x1, &cur_y1); - cur_y1 += 0.25f * char_height; float cur_x2 = cur_x1 + 1.0f, cur_y2 = cur_y1 + char_height; if (buffer_clip_rect(buffer, &cur_x1, &cur_y1, &cur_x2, &cur_y2)) { glColor3f(0,1,1); @@ -899,12 +914,18 @@ static void buffer_scroll_to_cursor(TextBuffer *buffer) { buffer_correct_scroll(buffer); // it's possible that min/max_scroll_x/y go too far } -// @TODO -#if 0 // scroll so that the cursor is in the center of the screen -void buffer_center_cursor(){ +void buffer_center_cursor(TextBuffer *buffer) { + i64 cursor_line = buffer->cursor_pos.line; + i64 cursor_col = buffer_index_to_column(buffer, (u32)cursor_line, buffer->cursor_pos.index); + i64 display_lines = buffer_display_lines(buffer); + i64 display_cols = buffer_display_cols(buffer); + + buffer->scroll_x = (double)(cursor_col - display_cols / 2); + buffer->scroll_y = (double)(cursor_line - display_lines / 2); + + buffer_correct_scroll(buffer); } -#endif // move left (if `by` is negative) or right (if `by` is positive) by the specified amount. // returns the signed number of characters successfully moved (it could be less in magnitude than `by` if the beginning of the file is reached) @@ -1468,7 +1489,6 @@ static Status buffer_undo_edit(TextBuffer *buffer, BufferEdit const *edit, Buffe success = true; } - buffer->store_undo_events = prev_store_undo_events; return success; } @@ -1476,6 +1496,7 @@ static Status buffer_undo_edit(TextBuffer *buffer, BufferEdit const *edit, Buffe static void buffer_cursor_to_edit(TextBuffer *buffer, BufferEdit *edit) { buffer_cursor_move_to_pos(buffer, buffer_pos_advance(buffer, edit->pos, edit->prev_len)); + buffer_center_cursor(buffer); // whenever we undo an edit, put the cursor in the center, to make it clear where the undo happened } void buffer_undo(TextBuffer *buffer, i64 ntimes) { |