diff options
Diffstat (limited to 'swaynag/render.c')
| -rw-r--r-- | swaynag/render.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/swaynag/render.c b/swaynag/render.c new file mode 100644 index 00000000..766409e4 --- /dev/null +++ b/swaynag/render.c @@ -0,0 +1,308 @@ +#include <stdint.h> +#include "cairo.h" +#include "log.h" +#include "pango.h" +#include "pool-buffer.h" +#include "swaynag/swaynag.h" +#include "swaynag/types.h" +#include "wlr-layer-shell-unstable-v1-client-protocol.h" + +static uint32_t render_message(cairo_t *cairo, struct swaynag *swaynag) { + uint32_t height = swaynag->height * swaynag->scale; + height -= swaynag->type->bar_border_thickness * swaynag->scale; + + int text_width, text_height; + get_text_size(cairo, swaynag->type->font, &text_width, &text_height, + swaynag->scale, true, "%s", swaynag->message); + + int padding = swaynag->type->message_padding * swaynag->scale; + + uint32_t ideal_height = text_height + padding * 2; + uint32_t ideal_surface_height = ideal_height / swaynag->scale; + if (swaynag->height < ideal_surface_height) { + return ideal_surface_height; + } + + cairo_set_source_u32(cairo, swaynag->type->text); + cairo_move_to(cairo, padding, (int)(ideal_height - text_height) / 2); + pango_printf(cairo, swaynag->type->font, swaynag->scale, false, + "%s", swaynag->message); + + return ideal_surface_height; +} + +static void render_details_scroll_button(cairo_t *cairo, + struct swaynag *swaynag, struct swaynag_button *button) { + int text_width, text_height; + get_text_size(cairo, swaynag->type->font, &text_width, &text_height, + swaynag->scale, true, "%s", button->text); + + int border = swaynag->type->button_border_thickness * swaynag->scale; + int padding = swaynag->type->button_padding * swaynag->scale; + + cairo_set_source_u32(cairo, swaynag->type->border); + cairo_rectangle(cairo, button->x, button->y, + button->width, button->height); + cairo_fill(cairo); + + cairo_set_source_u32(cairo, swaynag->type->button_background); + 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, swaynag->type->text); + cairo_move_to(cairo, button->x + border + padding, + button->y + border + (button->height - text_height) / 2); + pango_printf(cairo, swaynag->type->font, swaynag->scale, true, + "%s", button->text); +} + +static int get_detailed_scroll_button_width(cairo_t *cairo, + struct swaynag *swaynag) { + int up_width, down_width, temp_height; + get_text_size(cairo, swaynag->type->font, &up_width, &temp_height, + swaynag->scale, true, + "%s", swaynag->details.button_up.text); + get_text_size(cairo, swaynag->type->font, &down_width, &temp_height, + swaynag->scale, true, + "%s", swaynag->details.button_down.text); + + int text_width = up_width > down_width ? up_width : down_width; + int border = swaynag->type->button_border_thickness * swaynag->scale; + int padding = swaynag->type->button_padding * swaynag->scale; + + return text_width + border * 2 + padding * 2; +} + +static uint32_t render_detailed(cairo_t *cairo, struct swaynag *swaynag, + uint32_t y) { + uint32_t width = swaynag->width * swaynag->scale; + uint32_t height = swaynag->height * swaynag->scale; + height -= swaynag->type->bar_border_thickness * swaynag->scale; + + int border = swaynag->type->details_border_thickness * swaynag->scale; + int padding = swaynag->type->message_padding * swaynag->scale; + int decor = padding + border; + + swaynag->details.x = decor; + swaynag->details.y = y * swaynag->scale + decor; + swaynag->details.width = width - decor * 2; + + PangoLayout *layout = get_pango_layout(cairo, swaynag->type->font, + swaynag->details.message, swaynag->scale, false); + pango_layout_set_width(layout, + (swaynag->details.width - padding * 2) * PANGO_SCALE); + pango_layout_set_wrap(layout, PANGO_WRAP_WORD_CHAR); + pango_layout_set_single_paragraph_mode(layout, false); + pango_cairo_update_layout(cairo, layout); + swaynag->details.total_lines = pango_layout_get_line_count(layout); + + PangoLayoutLine *line; + line = pango_layout_get_line_readonly(layout, swaynag->details.offset); + gint offset = line->start_index; + const char *text = pango_layout_get_text(layout); + pango_layout_set_text(layout, text + offset, strlen(text) - offset); + + int text_width, text_height; + pango_cairo_update_layout(cairo, layout); + pango_layout_get_pixel_size(layout, &text_width, &text_height); + + bool show_buttons = swaynag->details.offset > 0; + int button_width = get_detailed_scroll_button_width(cairo, swaynag); + if (show_buttons) { + swaynag->details.width -= button_width; + pango_layout_set_width(layout, + (swaynag->details.width - padding * 2) * PANGO_SCALE); + } + + uint32_t ideal_height; + do { + ideal_height = swaynag->details.y + text_height + decor + padding * 2; + if (ideal_height > SWAYNAG_MAX_HEIGHT) { + ideal_height = SWAYNAG_MAX_HEIGHT; + + if (!show_buttons) { + show_buttons = true; + swaynag->details.width -= button_width; + pango_layout_set_width(layout, + (swaynag->details.width - padding * 2) * PANGO_SCALE); + } + } + + swaynag->details.height = ideal_height - swaynag->details.y - decor; + pango_layout_set_height(layout, + (swaynag->details.height - padding * 2) * PANGO_SCALE); + pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END); + pango_cairo_update_layout(cairo, layout); + pango_layout_get_pixel_size(layout, &text_width, &text_height); + } while (text_height != (swaynag->details.height - padding * 2)); + + swaynag->details.visible_lines = pango_layout_get_line_count(layout); + + if (show_buttons) { + swaynag->details.button_up.x = + swaynag->details.x + swaynag->details.width; + swaynag->details.button_up.y = swaynag->details.y; + swaynag->details.button_up.width = button_width; + swaynag->details.button_up.height = swaynag->details.height / 2; + render_details_scroll_button(cairo, swaynag, + &swaynag->details.button_up); + + swaynag->details.button_down.x = + swaynag->details.x + swaynag->details.width; + swaynag->details.button_down.y = + swaynag->details.button_up.y + swaynag->details.button_up.height; + swaynag->details.button_down.width = button_width; + swaynag->details.button_down.height = swaynag->details.height / 2; + render_details_scroll_button(cairo, swaynag, + &swaynag->details.button_down); + } + + cairo_set_source_u32(cairo, swaynag->type->border); + cairo_rectangle(cairo, swaynag->details.x, swaynag->details.y, + swaynag->details.width, swaynag->details.height); + cairo_fill(cairo); + + cairo_move_to(cairo, swaynag->details.x + padding, + swaynag->details.y + padding); + cairo_set_source_u32(cairo, swaynag->type->text); + pango_cairo_show_layout(cairo, layout); + g_object_unref(layout); + + return ideal_height / swaynag->scale; +} + +static uint32_t render_button(cairo_t *cairo, struct swaynag *swaynag, + int button_index, int *x) { + uint32_t height = swaynag->height * swaynag->scale; + height -= swaynag->type->bar_border_thickness * swaynag->scale; + struct swaynag_button *button = swaynag->buttons->items[button_index]; + + int text_width, text_height; + get_text_size(cairo, swaynag->type->font, &text_width, &text_height, + swaynag->scale, true, "%s", button->text); + + int border = swaynag->type->button_border_thickness * swaynag->scale; + int padding = swaynag->type->button_padding * swaynag->scale; + + uint32_t ideal_height = text_height + padding * 2 + border * 2; + uint32_t ideal_surface_height = ideal_height / swaynag->scale; + if (swaynag->height < ideal_surface_height) { + return ideal_surface_height; + } + + button->x = *x - border - text_width - padding * 2; + button->y = (int)(ideal_height - text_height) / 2 - padding; + button->width = text_width + padding * 2; + button->height = text_height + padding * 2; + + cairo_set_source_u32(cairo, swaynag->type->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, swaynag->type->button_background); + cairo_rectangle(cairo, button->x, button->y, + button->width, button->height); + cairo_fill(cairo); + + cairo_set_source_u32(cairo, swaynag->type->text); + cairo_move_to(cairo, button->x + padding, button->y + padding); + pango_printf(cairo, swaynag->type->font, swaynag->scale, true, + "%s", button->text); + + *x = button->x - border; + + return ideal_surface_height; +} + +static uint32_t render_to_cairo(cairo_t *cairo, struct swaynag *swaynag) { + uint32_t max_height = 0; + + cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE); + cairo_set_source_u32(cairo, swaynag->type->background); + cairo_paint(cairo); + + uint32_t h = render_message(cairo, swaynag); + max_height = h > max_height ? h : max_height; + + int x = swaynag->width - swaynag->type->button_margin_right; + x *= swaynag->scale; + for (int i = 0; i < swaynag->buttons->length; i++) { + h = render_button(cairo, swaynag, i, &x); + max_height = h > max_height ? h : max_height; + x -= swaynag->type->button_gap * swaynag->scale; + if (i == 0) { + x -= swaynag->type->button_gap_close * swaynag->scale; + } + } + + if (swaynag->details.visible) { + h = render_detailed(cairo, swaynag, max_height); + max_height = h > max_height ? h : max_height; + } + + int border = swaynag->type->bar_border_thickness * swaynag->scale; + if (max_height > swaynag->height) { + max_height += border; + } + cairo_set_source_u32(cairo, swaynag->type->border_bottom); + cairo_rectangle(cairo, 0, + swaynag->height * swaynag->scale - border, + swaynag->width * swaynag->scale, + border); + cairo_fill(cairo); + + return max_height; +} + +void render_frame(struct swaynag *swaynag) { + if (!swaynag->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, swaynag); + if (height != swaynag->height) { + zwlr_layer_surface_v1_set_size(swaynag->layer_surface, 0, height); + zwlr_layer_surface_v1_set_exclusive_zone(swaynag->layer_surface, + height); + wl_surface_commit(swaynag->surface); + wl_display_roundtrip(swaynag->display); + } else { + swaynag->current_buffer = get_next_buffer(swaynag->shm, + swaynag->buffers, + swaynag->width * swaynag->scale, + swaynag->height * swaynag->scale); + if (!swaynag->current_buffer) { + wlr_log(WLR_DEBUG, "Failed to get buffer. Skipping frame."); + goto cleanup; + } + + cairo_t *shm = swaynag->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(swaynag->surface, swaynag->scale); + wl_surface_attach(swaynag->surface, + swaynag->current_buffer->buffer, 0, 0); + wl_surface_damage(swaynag->surface, 0, 0, + swaynag->width, swaynag->height); + wl_surface_commit(swaynag->surface); + wl_display_roundtrip(swaynag->display); + } + +cleanup: + cairo_surface_destroy(recorder); + cairo_destroy(cairo); +} |