GUAC-727: Remove glyph cache from terminal.
This commit is contained in:
parent
6473f5029a
commit
6433115468
@ -24,6 +24,7 @@
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#include "common.h"
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#include "display.h"
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#include "guac_surface.h"
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#include "types.h"
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#include <math.h>
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@ -121,14 +122,42 @@ int __guac_terminal_hash_codepoint(int codepoint) {
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}
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/**
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* Returns a cached glyph for the given codepoint, rendering and caching it first if necessary.
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* Sets the attributes of the display such that future glyphs will render as
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* expected.
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*/
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guac_terminal_glyph* __guac_terminal_get_glyph(guac_terminal_display* display, int codepoint) {
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int __guac_terminal_set_colors(guac_terminal_display* display,
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guac_terminal_attributes* attributes) {
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guac_socket* socket = display->client->socket;
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int cell_width = display->char_width * GUAC_TERMINAL_MAX_CHAR_WIDTH;
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int background, foreground;
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/* Handle reverse video */
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if (attributes->reverse != attributes->cursor) {
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background = attributes->foreground;
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foreground = attributes->background;
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}
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else {
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foreground = attributes->foreground;
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background = attributes->background;
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}
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/* Handle bold */
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if (attributes->bold && foreground <= 7)
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foreground += 8;
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display->glyph_foreground = foreground;
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display->glyph_background = background;
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return 0;
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}
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/**
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* Sends the given character to the terminal at the given row and column,
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* rendering the character immediately. This bypasses the guac_terminal_display
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* mechanism and is intended for flushing of updates only.
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*/
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int __guac_terminal_set(guac_terminal_display* display, int row, int col, int codepoint) {
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int location;
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int width;
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int bytes;
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@ -150,35 +179,18 @@ guac_terminal_glyph* __guac_terminal_get_glyph(guac_terminal_display* display, i
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int layout_width, layout_height;
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int ideal_layout_width, ideal_layout_height;
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/* Get codepoint hash */
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int hashcode = __guac_terminal_hash_codepoint(codepoint);
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guac_terminal_glyph* glyph = &(display->glyphs[hashcode]);
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/* If something already stored here, either same codepoint or collision */
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if (glyph->location) {
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location = glyph->location - 1;
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/* If match, return match. */
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if (glyph->codepoint == codepoint)
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return glyph;
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/* Otherwise, reuse location */
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}
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/* If no collision, allocate new glyph location */
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else
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location = display->next_glyph++;
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/* Convert to UTF-8 */
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bytes = guac_terminal_encode_utf8(codepoint, utf8);
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/* Calculate width in columns */
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width = wcwidth(codepoint);
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if (width < 0)
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width = 1;
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/* Do nothing if glyph is empty */
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if (width == 0)
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return 0;
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/* Convert to UTF-8 */
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bytes = guac_terminal_encode_utf8(codepoint, utf8);
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surface_width = width * display->char_width;
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surface_height = display->char_height;
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@ -186,10 +198,19 @@ guac_terminal_glyph* __guac_terminal_get_glyph(guac_terminal_display* display, i
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ideal_layout_height = surface_height * PANGO_SCALE;
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/* Prepare surface */
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surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
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surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24,
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surface_width, surface_height);
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cairo = cairo_create(surface);
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/* Fill background */
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cairo_set_source_rgb(cairo,
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background->red / 255.0,
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background->green / 255.0,
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background->blue / 255.0);
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cairo_rectangle(cairo, 0, 0, surface_width, surface_height);
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cairo_fill(cairo);
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/* Get layout */
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layout = pango_cairo_create_layout(cairo);
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pango_layout_set_font_description(layout, display->font_desc);
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@ -214,161 +235,29 @@ guac_terminal_glyph* __guac_terminal_get_glyph(guac_terminal_display* display, i
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}
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/* Draw */
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cairo_set_source_rgba(cairo,
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cairo_set_source_rgb(cairo,
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color->red / 255.0,
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color->green / 255.0,
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color->blue / 255.0,
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1.0 /* alpha */ );
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color->blue / 255.0);
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cairo_move_to(cairo, 0.0, 0.0);
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pango_cairo_show_layout(cairo, layout);
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/* Draw */
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guac_common_surface_draw(display->default_surface,
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display->char_width * col,
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display->char_height * row,
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surface);
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/* Free all */
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g_object_unref(layout);
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cairo_destroy(cairo);
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/* Clear existing glyph (if any) */
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guac_protocol_send_rect(socket, display->glyph_stroke,
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location * cell_width, 0,
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cell_width, display->char_height);
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guac_protocol_send_cfill(socket, GUAC_COMP_ROUT, display->glyph_stroke,
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0x00, 0x00, 0x00, 0xFF);
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/* Send glyph */
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guac_protocol_send_png(socket, GUAC_COMP_OVER, display->glyph_stroke, location * cell_width, 0, surface);
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/* Update filled glyphs */
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guac_protocol_send_rect(socket, display->filled_glyphs,
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location * cell_width, 0,
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cell_width, display->char_height);
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guac_protocol_send_cfill(socket, GUAC_COMP_OVER, display->filled_glyphs,
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background->red,
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background->green,
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background->blue,
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0xFF);
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guac_protocol_send_copy(socket, display->glyph_stroke,
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location * cell_width, 0, cell_width, display->char_height,
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GUAC_COMP_OVER, display->filled_glyphs, location * cell_width, 0);
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cairo_surface_destroy(surface);
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/* Return glyph */
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glyph->location = location+1;
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glyph->codepoint = codepoint;
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glyph->width = width;
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return glyph;
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}
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/**
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* Sets the attributes of the glyph cache layer such that future copies from
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* this layer will display as expected.
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*/
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int __guac_terminal_set_colors(guac_terminal_display* display,
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guac_terminal_attributes* attributes) {
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guac_socket* socket = display->client->socket;
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const guac_terminal_color* background_color;
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int cell_width = display->char_width * GUAC_TERMINAL_MAX_CHAR_WIDTH;
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int background, foreground;
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/* Handle reverse video */
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if (attributes->reverse != attributes->cursor) {
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background = attributes->foreground;
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foreground = attributes->background;
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}
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else {
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foreground = attributes->foreground;
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background = attributes->background;
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}
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/* Handle bold */
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if (attributes->bold && foreground <= 7)
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foreground += 8;
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/* Get background color */
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background_color = &guac_terminal_palette[background];
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/* If foreground different from current, colorize */
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if (foreground != display->glyph_foreground) {
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/* Get color */
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const guac_terminal_color* color =
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&guac_terminal_palette[foreground];
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/* Colorize letter */
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guac_protocol_send_rect(socket, display->glyph_stroke,
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0, 0,
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cell_width * display->next_glyph, display->char_height);
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guac_protocol_send_cfill(socket, GUAC_COMP_ATOP, display->glyph_stroke,
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color->red,
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color->green,
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color->blue,
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255);
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}
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/* If any color change at all, update filled */
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if (foreground != display->glyph_foreground
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|| background != display->glyph_background) {
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/* Set background */
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guac_protocol_send_rect(socket, display->filled_glyphs,
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0, 0,
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cell_width * display->next_glyph, display->char_height);
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guac_protocol_send_cfill(socket, GUAC_COMP_OVER, display->filled_glyphs,
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background_color->red,
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background_color->green,
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background_color->blue,
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255);
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/* Copy stroke */
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guac_protocol_send_copy(socket, display->glyph_stroke,
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0, 0,
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cell_width * display->next_glyph, display->char_height,
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GUAC_COMP_OVER, display->filled_glyphs,
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0, 0);
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}
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display->glyph_foreground = foreground;
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display->glyph_background = background;
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return 0;
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}
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/**
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* Sends the given character to the terminal at the given row and column,
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* rendering the charater immediately. This bypasses the guac_terminal_display
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* mechanism and is intended for flushing of updates only.
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*/
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int __guac_terminal_set(guac_terminal_display* display, int row, int col, int codepoint) {
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guac_socket* socket = display->client->socket;
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guac_terminal_glyph* glyph = __guac_terminal_get_glyph(display, codepoint);
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int cell_width = display->char_width * GUAC_TERMINAL_MAX_CHAR_WIDTH;
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/* Do nothing if glyph is empty */
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if (glyph->width == 0)
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return 0;
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return guac_protocol_send_copy(socket,
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display->filled_glyphs,
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(glyph->location-1) * cell_width, 0, glyph->width * display->char_width, display->char_height,
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GUAC_COMP_OVER, GUAC_DEFAULT_LAYER,
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display->char_width * col,
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display->char_height * row);
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}
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guac_terminal_display* guac_terminal_display_alloc(guac_client* client,
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const char* font_name, int font_size, int dpi,
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int foreground, int background) {
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@ -382,10 +271,8 @@ guac_terminal_display* guac_terminal_display_alloc(guac_client* client,
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guac_terminal_display* display = malloc(sizeof(guac_terminal_display));
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display->client = client;
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memset(display->glyphs, 0, sizeof(display->glyphs));
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display->glyph_stroke = guac_client_alloc_buffer(client);
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display->filled_glyphs = guac_client_alloc_buffer(client);
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/* Create default surface */
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display->default_surface = guac_common_surface_alloc(client->socket, GUAC_DEFAULT_LAYER, 0, 0);
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display->select_layer = guac_client_alloc_layer(client);
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/* Get font */
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@ -625,9 +512,9 @@ void guac_terminal_display_resize(guac_terminal_display* display, int width, int
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display->width = width;
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display->height = height;
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/* Send initial display size */
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guac_protocol_send_size(display->client->socket,
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GUAC_DEFAULT_LAYER,
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/* Send display size */
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guac_common_surface_resize(
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display->default_surface,
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display->char_width * width,
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display->char_height * height);
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@ -745,16 +632,15 @@ void __guac_terminal_display_flush_copy(guac_terminal_display* display) {
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}
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/* Send copy */
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guac_protocol_send_copy(display->client->socket,
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guac_common_surface_copy(
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GUAC_DEFAULT_LAYER,
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display->default_surface,
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current->column * display->char_width,
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current->row * display->char_height,
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rect_width * display->char_width,
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rect_height * display->char_height,
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GUAC_COMP_OVER,
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GUAC_DEFAULT_LAYER,
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display->default_surface,
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col * display->char_width,
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row * display->char_height);
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@ -882,18 +768,13 @@ void __guac_terminal_display_flush_clear(guac_terminal_display* display) {
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}
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/* Send rect */
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guac_protocol_send_rect(display->client->socket,
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GUAC_DEFAULT_LAYER,
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guac_common_surface_rect(
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display->default_surface,
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col * display->char_width,
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row * display->char_height,
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rect_width * display->char_width,
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rect_height * display->char_height);
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guac_protocol_send_cfill(display->client->socket,
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GUAC_COMP_OVER,
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GUAC_DEFAULT_LAYER,
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guac_color->red, guac_color->green, guac_color->blue,
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0xFF);
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rect_height * display->char_height,
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guac_color->red, guac_color->green, guac_color->blue);
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} /* end if clear operation */
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@ -905,6 +786,7 @@ void __guac_terminal_display_flush_clear(guac_terminal_display* display) {
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}
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void __guac_terminal_display_flush_set(guac_terminal_display* display) {
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guac_terminal_operation* current = display->operations;
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@ -917,13 +799,18 @@ void __guac_terminal_display_flush_set(guac_terminal_display* display) {
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/* Perform given operation */
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if (current->type == GUAC_CHAR_SET) {
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int codepoint = current->character.value;
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/* Use space if no glyph */
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if (!guac_terminal_has_glyph(codepoint))
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codepoint = ' ';
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/* Set attributes */
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__guac_terminal_set_colors(display,
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&(current->character.attributes));
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/* Send character */
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__guac_terminal_set(display, row, col,
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current->character.value);
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__guac_terminal_set(display, row, col, codepoint);
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/* Mark operation as handled */
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current->type = GUAC_CHAR_NOP;
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@ -945,6 +832,9 @@ void guac_terminal_display_flush(guac_terminal_display* display) {
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__guac_terminal_display_flush_clear(display);
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__guac_terminal_display_flush_set(display);
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/* Flush surface */
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guac_common_surface_flush(display->default_surface);
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}
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void guac_terminal_display_commit_select(guac_terminal_display* display) {
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@ -25,6 +25,7 @@
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#define _GUAC_TERMINAL_DISPLAY_H
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#include "config.h"
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#include "guac_surface.h"
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#include "types.h"
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@ -95,28 +96,6 @@ typedef struct guac_terminal_operation {
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} guac_terminal_operation;
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/**
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* A cached glyph.
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*/
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typedef struct guac_terminal_glyph {
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/**
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* The location within the glyph layer that this glyph can be found.
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*/
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int location;
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/**
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* The codepoint currently stored at that location.
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*/
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int codepoint;
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/**
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* The width of this glyph, in columns.
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*/
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int width;
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} guac_terminal_glyph;
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/**
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* Set of all pending operations for the currently-visible screen area.
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*/
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@ -157,16 +136,6 @@ typedef struct guac_terminal_display {
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*/
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int char_height;
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/**
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* Index of next glyph to create
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*/
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int next_glyph;
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/**
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* Index of locations for each glyph in the stroke and fill layers.
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*/
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guac_terminal_glyph glyphs[512];
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/**
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* Color of glyphs in copy buffer
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*/
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@ -177,23 +146,16 @@ typedef struct guac_terminal_display {
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*/
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int glyph_background;
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/**
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* The display.
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*/
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guac_common_surface* default_surface;
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/**
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* Layer above default layer which highlights selected text.
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*/
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guac_layer* select_layer;
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/**
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* A single wide layer holding each glyph, with each glyph only
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* colored with foreground color (background remains transparent).
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*/
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guac_layer* glyph_stroke;
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/**
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* A single wide layer holding each glyph, with each glyph properly
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* colored with foreground and background color (no transparency at all).
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*/
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guac_layer* filled_glyphs;
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/**
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* Whether text is being selected.
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*/
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