From 88bc4b528ef3e1af3598b513dd5c1572dd09ec23 Mon Sep 17 00:00:00 2001 From: Brian Ashworth Date: Wed, 25 Jul 2018 21:57:19 -0400 Subject: Implements swaynagbar --- swaynagbar/render.c | 152 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 152 insertions(+) create mode 100644 swaynagbar/render.c (limited to 'swaynagbar/render.c') diff --git a/swaynagbar/render.c b/swaynagbar/render.c new file mode 100644 index 00000000..c0f59298 --- /dev/null +++ b/swaynagbar/render.c @@ -0,0 +1,152 @@ +#include +#include "cairo.h" +#include "log.h" +#include "pango.h" +#include "pool-buffer.h" +#include "swaynagbar/nagbar.h" +#include "wlr-layer-shell-unstable-v1-client-protocol.h" + +static uint32_t render_message(cairo_t *cairo, struct sway_nagbar *nagbar) { + uint32_t height = nagbar->height * nagbar->scale; + height -= NAGBAR_BAR_BORDER_THICKNESS * nagbar->scale; + + int text_width, text_height; + get_text_size(cairo, nagbar->font, &text_width, &text_height, + nagbar->scale, true, "%s", nagbar->message); + + int padding = NAGBAR_MESSAGE_PADDING * nagbar->scale; + + uint32_t ideal_height = text_height + padding * 2; + uint32_t ideal_surface_height = ideal_height / nagbar->scale; + if (nagbar->height < ideal_surface_height) { + return ideal_surface_height; + } + + cairo_set_source_u32(cairo, nagbar->colors.text); + cairo_move_to(cairo, padding, (int)(height / 2.0 - text_height / 2.0)); + pango_printf(cairo, nagbar->font, nagbar->scale, true, "%s", + nagbar->message); + + return nagbar->height; +} + +static uint32_t render_button(cairo_t *cairo, struct sway_nagbar *nagbar, + int button_index, int *x) { + uint32_t height = nagbar->height * nagbar->scale; + height -= NAGBAR_BAR_BORDER_THICKNESS * nagbar->scale; + struct sway_nagbar_button *button = nagbar->buttons->items[button_index]; + + int text_width, text_height; + get_text_size(cairo, nagbar->font, &text_width, &text_height, + nagbar->scale, true, "%s", button->text); + + int border = NAGBAR_BUTTON_BORDER_THICKNESS * nagbar->scale; + int padding = NAGBAR_BUTTON_PADDING * nagbar->scale; + + uint32_t ideal_height = text_height + padding * 2 + border * 2; + uint32_t ideal_surface_height = ideal_height / nagbar->scale; + if (nagbar->height < ideal_surface_height) { + return ideal_surface_height; + } + + button->x = *x - border - text_width - padding * 2; + button->y = (int)(height / 2.0 - text_height / 2.0) - padding; + button->width = text_width + padding * 2; + button->height = text_height + padding * 2; + + cairo_set_source_u32(cairo, nagbar->colors.border); + cairo_rectangle(cairo, button->x - border, button->y - border, + button->width + border * 2, button->height + border * 2); + cairo_fill(cairo); + + cairo_set_source_u32(cairo, nagbar->colors.button_background); + cairo_rectangle(cairo, button->x, button->y, + button->width, button->height); + cairo_fill(cairo); + + cairo_set_source_u32(cairo, nagbar->colors.text); + cairo_move_to(cairo, button->x + padding, button->y + padding); + pango_printf(cairo, nagbar->font, nagbar->scale, true, "%s", button->text); + + *x = button->x - border; + + return nagbar->height; +} + +static uint32_t render_to_cairo(cairo_t *cairo, struct sway_nagbar *nagbar) { + uint32_t max_height = 0; + + cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE); + cairo_set_source_u32(cairo, nagbar->colors.background); + cairo_paint(cairo); + + uint32_t h = render_message(cairo, nagbar); + max_height = h > max_height ? h : max_height; + + int x = (nagbar->width - NAGBAR_BUTTON_MARGIN_RIGHT) * nagbar->scale; + for (int i = 0; i < nagbar->buttons->length; i++) { + h = render_button(cairo, nagbar, i, &x); + max_height = h > max_height ? h : max_height; + x -= NAGBAR_BUTTON_GAP * nagbar->scale; + if (i == 0) { + x -= NAGBAR_BUTTON_GAP_CLOSE * nagbar->scale; + } + } + + int border = NAGBAR_BAR_BORDER_THICKNESS * nagbar->scale; + if (max_height > nagbar->height) { + max_height += border; + } + cairo_set_source_u32(cairo, nagbar->colors.border_bottom); + cairo_rectangle(cairo, 0, nagbar->height * nagbar->scale - border, + nagbar->width * nagbar->scale, border); + cairo_fill(cairo); + + return max_height > nagbar->height ? max_height : nagbar->height; +} + +void render_frame(struct sway_nagbar *nagbar) { + if (!nagbar->run_display) { + return; + } + + cairo_surface_t *recorder = cairo_recording_surface_create( + CAIRO_CONTENT_COLOR_ALPHA, NULL); + cairo_t *cairo = cairo_create(recorder); + cairo_save(cairo); + cairo_set_operator(cairo, CAIRO_OPERATOR_CLEAR); + cairo_paint(cairo); + cairo_restore(cairo); + uint32_t height = render_to_cairo(cairo, nagbar); + if (height != nagbar->height) { + zwlr_layer_surface_v1_set_size(nagbar->layer_surface, 0, height); + zwlr_layer_surface_v1_set_exclusive_zone(nagbar->layer_surface, + height); + wl_surface_commit(nagbar->surface); + wl_display_roundtrip(nagbar->display); + } else { + nagbar->current_buffer = get_next_buffer(nagbar->shm, + nagbar->buffers, + nagbar->width * nagbar->scale, + nagbar->height * nagbar->scale); + cairo_t *shm = nagbar->current_buffer->cairo; + + cairo_save(shm); + cairo_set_operator(shm, CAIRO_OPERATOR_CLEAR); + cairo_paint(shm); + cairo_restore(shm); + + cairo_set_source_surface(shm, recorder, 0.0, 0.0); + cairo_paint(shm); + + wl_surface_set_buffer_scale(nagbar->surface, nagbar->scale); + wl_surface_attach(nagbar->surface, + nagbar->current_buffer->buffer, 0, 0); + wl_surface_damage(nagbar->surface, 0, 0, + nagbar->width, nagbar->height); + wl_surface_commit(nagbar->surface); + wl_display_roundtrip(nagbar->display); + } + cairo_surface_destroy(recorder); + cairo_destroy(cairo); +} -- cgit v1.2.3-70-g09d2