diff --git a/ChangeLog.gfxtermscroll b/ChangeLog.gfxtermscroll new file mode 100644 index 000000000..b0733116f --- /dev/null +++ b/ChangeLog.gfxtermscroll @@ -0,0 +1,18 @@ +2009-11-30 Vladimir Serbinenko + + Agglomerate scrolling in gfxterm. + + * term/gfxterm.c (grub_virtual_screen): New member 'total_screen'. + (grub_virtual_screen_setup): Initialise 'total_screen'. + (write_char): Split to ... + (paint_char): ... this ... + (write_char): ... and this. + (paint_char): Handle delayed scrolling. + (draw_cursor): Likewise. + (scroll_up): Split to ... + (real_scroll): ... this ... + (scroll_up): ... and this. + (real_scroll): Handle multi-line scroll and draw below-the-bottom + characters. + (grub_gfxterm_refresh): Call real_scroll. + diff --git a/term/gfxterm.c b/term/gfxterm.c index 5330c4ac4..be0487830 100644 --- a/term/gfxterm.c +++ b/term/gfxterm.c @@ -102,6 +102,8 @@ struct grub_virtual_screen /* Text buffer for virtual screen. Contains (columns * rows) number of entries. */ struct grub_colored_char *text_buffer; + + int total_scroll; }; struct grub_gfxterm_window @@ -225,6 +227,7 @@ grub_virtual_screen_setup (unsigned int x, unsigned int y, virtual_screen.cursor_x = 0; virtual_screen.cursor_y = 0; virtual_screen.cursor_state = 1; + virtual_screen.total_scroll = 0; /* Calculate size of text buffer. */ virtual_screen.columns = virtual_screen.width / virtual_screen.normal_char_width; @@ -586,8 +589,8 @@ dirty_region_redraw (void) redraw_screen_rect (x, y, width, height); } -static void -write_char (void) +static inline void +paint_char (unsigned cx, unsigned cy) { struct grub_colored_char *p; struct grub_font_glyph *glyph; @@ -599,10 +602,12 @@ write_char (void) unsigned int height; unsigned int width; + if (cy + virtual_screen.total_scroll >= virtual_screen.rows) + return; + /* Find out active character. */ p = (virtual_screen.text_buffer - + virtual_screen.cursor_x - + (virtual_screen.cursor_y * virtual_screen.columns)); + + cx + (cy * virtual_screen.columns)); p -= p->index; @@ -616,8 +621,8 @@ write_char (void) color = p->fg_color; bgcolor = p->bg_color; - x = virtual_screen.cursor_x * virtual_screen.normal_char_width; - y = virtual_screen.cursor_y * virtual_screen.normal_char_height; + x = cx * virtual_screen.normal_char_width; + y = (cy + virtual_screen.total_scroll) * virtual_screen.normal_char_height; /* Render glyph to text layer. */ grub_video_set_active_render_target (text_layer); @@ -630,64 +635,58 @@ write_char (void) width, height); } -static void +static inline void +write_char (void) +{ + paint_char (virtual_screen.cursor_x, virtual_screen.cursor_y); +} + +static inline void draw_cursor (int show) { + unsigned int x; + unsigned int y; + unsigned int width; + unsigned int height; + grub_video_color_t color; + write_char (); - if (show) - { - unsigned int x; - unsigned int y; - unsigned int width; - unsigned int height; - grub_video_color_t color; + if (!show) + return; - /* Determine cursor properties and position on text layer. */ - x = virtual_screen.cursor_x * virtual_screen.normal_char_width; - width = virtual_screen.normal_char_width; - color = virtual_screen.fg_color; - y = (virtual_screen.cursor_y * virtual_screen.normal_char_height - + grub_font_get_ascent (virtual_screen.font)); - height = 2; + if (virtual_screen.cursor_y + virtual_screen.total_scroll + >= virtual_screen.rows) + return; - /* Render cursor to text layer. */ - grub_video_set_active_render_target (text_layer); - grub_video_fill_rect (color, x, y, width, height); - grub_video_set_active_render_target (render_target); - - /* Mark cursor to be redrawn. */ - dirty_region_add (virtual_screen.offset_x + x, - virtual_screen.offset_y + y, - width, height); - } + /* Determine cursor properties and position on text layer. */ + x = virtual_screen.cursor_x * virtual_screen.normal_char_width; + width = virtual_screen.normal_char_width; + color = virtual_screen.fg_color; + y = ((virtual_screen.cursor_y + virtual_screen.total_scroll) + * virtual_screen.normal_char_height + + grub_font_get_ascent (virtual_screen.font)); + height = 2; + + /* Render cursor to text layer. */ + grub_video_set_active_render_target (text_layer); + grub_video_fill_rect (color, x, y, width, height); + grub_video_set_active_render_target (render_target); + + /* Mark cursor to be redrawn. */ + dirty_region_add (virtual_screen.offset_x + x, + virtual_screen.offset_y + y, + width, height); } static void -scroll_up (void) +real_scroll (void) { - unsigned int i; + unsigned int i, j, was_scroll; grub_video_color_t color; - /* If we don't have background bitmap, remove cursor. */ - if (!bitmap) - { - /* Remove cursor. */ - draw_cursor (0); - } - - /* Scroll text buffer with one line to up. */ - grub_memmove (virtual_screen.text_buffer, - virtual_screen.text_buffer + virtual_screen.columns, - sizeof (*virtual_screen.text_buffer) - * virtual_screen.columns - * (virtual_screen.rows - 1)); - - /* Clear last line in text buffer. */ - for (i = virtual_screen.columns * (virtual_screen.rows - 1); - i < virtual_screen.columns * virtual_screen.rows; - i++) - clear_char (&(virtual_screen.text_buffer[i])); + if (!virtual_screen.total_scroll) + return; /* If we have bitmap, re-draw screen, otherwise scroll physical screen too. */ if (bitmap) @@ -695,7 +694,8 @@ scroll_up (void) /* Scroll physical screen. */ grub_video_set_active_render_target (text_layer); color = virtual_screen.bg_color; - grub_video_scroll (color, 0, -virtual_screen.normal_char_height); + grub_video_scroll (color, 0, -virtual_screen.normal_char_height + * virtual_screen.total_scroll); /* Mark virtual screen to be redrawn. */ dirty_region_add_virtualscreen (); @@ -704,6 +704,9 @@ scroll_up (void) { grub_video_rect_t saved_view; + /* Remove cursor. */ + draw_cursor (0); + grub_video_set_active_render_target (render_target); /* Save viewport and set it to our window. */ grub_video_get_viewport ((unsigned *) &saved_view.x, @@ -723,13 +726,15 @@ scroll_up (void) virtual_screen.offset_x, virtual_screen.offset_y, virtual_screen.width, - virtual_screen.normal_char_height); + virtual_screen.normal_char_height + * virtual_screen.total_scroll); grub_video_set_active_render_target (render_target); dirty_region_redraw (); /* Scroll physical screen. */ - grub_video_scroll (color, 0, -virtual_screen.normal_char_height); + grub_video_scroll (color, 0, -virtual_screen.normal_char_height + * virtual_screen.total_scroll); if (i) grub_video_swap_buffers (); @@ -739,22 +744,54 @@ scroll_up (void) /* Scroll physical screen. */ grub_video_set_active_render_target (text_layer); color = virtual_screen.bg_color; - grub_video_scroll (color, 0, -virtual_screen.normal_char_height); + grub_video_scroll (color, 0, -virtual_screen.normal_char_height + * virtual_screen.total_scroll); /* Restore saved viewport. */ grub_video_set_viewport (saved_view.x, saved_view.y, saved_view.width, saved_view.height); grub_video_set_active_render_target (render_target); - /* Draw cursor if visible. */ - if (virtual_screen.cursor_state) - draw_cursor (1); } + /* Draw cursor if visible. */ + if (virtual_screen.cursor_state) + draw_cursor (1); + + was_scroll = virtual_screen.total_scroll; + virtual_screen.total_scroll = 0; + + /* Draw shadow part. */ + for (i = virtual_screen.rows - was_scroll; + i < virtual_screen.rows; i++) + for (j = 0; j < virtual_screen.columns; j++) + paint_char (j, i); + if (repaint_callback) repaint_callback (window.x, window.y, window.width, window.height); } +static void +scroll_up (void) +{ + unsigned int i; + + /* Scroll text buffer with one line to up. */ + grub_memmove (virtual_screen.text_buffer, + virtual_screen.text_buffer + virtual_screen.columns, + sizeof (*virtual_screen.text_buffer) + * virtual_screen.columns + * (virtual_screen.rows - 1)); + + /* Clear last line in text buffer. */ + for (i = virtual_screen.columns * (virtual_screen.rows - 1); + i < virtual_screen.columns * virtual_screen.rows; + i++) + clear_char (&(virtual_screen.text_buffer[i])); + + virtual_screen.total_scroll++; +} + static void grub_gfxterm_putchar (grub_uint32_t c) { @@ -1023,6 +1060,8 @@ grub_gfxterm_setcursor (int on) static void grub_gfxterm_refresh (void) { + real_scroll (); + /* Redraw only changed regions. */ dirty_region_redraw ();