Merge branch 'wlroots' into fix-focus-inactive

1 files changed, 150 insertions, 0 deletions

diff --git a/swaylock/render.c b/swaylock/render.c
new file mode 100644
index 00000000..cd387be5
--- /dev/null
+++ b/swaylock/render.c
@@ -0,0 +1,150 @@
+#define _POSIX_C_SOURCE 199506L
+#include <math.h>
+#include <stdlib.h>
+#include <wayland-client.h>
+#include "cairo.h"
+#include "background-image.h"
+#include "swaylock/swaylock.h"
+
+#define M_PI 3.14159265358979323846
+const int ARC_RADIUS = 50;
+const int ARC_THICKNESS = 10;
+const float TYPE_INDICATOR_RANGE = M_PI / 3.0f;
+const float TYPE_INDICATOR_BORDER_THICKNESS = M_PI / 128.0f;
+
+void render_frame(struct swaylock_surface *surface) {
+	struct swaylock_state *state = surface->state;
+
+	int buffer_width = surface->width * surface->scale;
+	int buffer_height = surface->height * surface->scale;
+
+	surface->current_buffer = get_next_buffer(state->shm,
+			surface->buffers, buffer_width, buffer_height);
+	cairo_t *cairo = surface->current_buffer->cairo;
+	cairo_identity_matrix(cairo);
+
+	if (state->args.mode == BACKGROUND_MODE_SOLID_COLOR) {
+		cairo_set_source_u32(cairo, state->args.color);
+		cairo_paint(cairo);
+	} else {
+		render_background_image(cairo, surface->image,
+				state->args.mode, buffer_width, buffer_height);
+	}
+	cairo_identity_matrix(cairo);
+
+	int arc_radius = ARC_RADIUS * surface->scale;
+	int arc_thickness = ARC_THICKNESS * surface->scale;
+	float type_indicator_border_thickness =
+		TYPE_INDICATOR_BORDER_THICKNESS * surface->scale;
+
+	if (state->args.show_indicator && state->auth_state != AUTH_STATE_IDLE) {
+		// Draw circle
+		cairo_set_line_width(cairo, arc_thickness);
+		cairo_arc(cairo, buffer_width / 2, buffer_height / 2, arc_radius, 0, 2 * M_PI);
+		switch (state->auth_state) {
+		case AUTH_STATE_INPUT:
+		case AUTH_STATE_BACKSPACE: {
+			cairo_set_source_rgba(cairo, 0, 0, 0, 0.75);
+			cairo_fill_preserve(cairo);
+			cairo_set_source_rgb(cairo, 51.0 / 255, 125.0 / 255, 0);
+			cairo_stroke(cairo);
+		} break;
+		case AUTH_STATE_VALIDATING: {
+			cairo_set_source_rgba(cairo, 0, 114.0 / 255, 255.0 / 255, 0.75);
+			cairo_fill_preserve(cairo);
+			cairo_set_source_rgb(cairo, 51.0 / 255, 0, 250.0 / 255);
+			cairo_stroke(cairo);
+		} break;
+		case AUTH_STATE_INVALID: {
+			cairo_set_source_rgba(cairo, 250.0 / 255, 0, 0, 0.75);
+			cairo_fill_preserve(cairo);
+			cairo_set_source_rgb(cairo, 125.0 / 255, 51.0 / 255, 0);
+			cairo_stroke(cairo);
+		} break;
+		default: break;
+		}
+
+		// Draw a message
+		char *text = NULL;
+		cairo_set_source_rgb(cairo, 0, 0, 0);
+		cairo_select_font_face(cairo, "sans-serif",
+				CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+		cairo_set_font_size(cairo, arc_radius / 3.0f);
+		switch (state->auth_state) {
+		case AUTH_STATE_VALIDATING:
+			text = "verifying";
+			break;
+		case AUTH_STATE_INVALID:
+			text = "wrong";
+			break;
+		default: break;
+		}
+
+		if (text) {
+			cairo_text_extents_t extents;
+			double x, y;
+			cairo_text_extents(cairo, text, &extents);
+			x = (buffer_width / 2) -
+				(extents.width / 2 + extents.x_bearing);
+			y = (buffer_height / 2) -
+				(extents.height / 2 + extents.y_bearing);
+
+			cairo_move_to(cairo, x, y);
+			cairo_show_text(cairo, text);
+			cairo_close_path(cairo);
+			cairo_new_sub_path(cairo);
+		}
+
+		// Typing indicator: Highlight random part on keypress
+		if (state->auth_state == AUTH_STATE_INPUT
+				|| state->auth_state == AUTH_STATE_BACKSPACE) {
+			static double highlight_start = 0;
+			highlight_start +=
+				(rand() % (int)(M_PI * 100)) / 100.0 + M_PI * 0.5;
+			cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
+					arc_radius, highlight_start,
+					highlight_start + TYPE_INDICATOR_RANGE);
+			if (state->auth_state == AUTH_STATE_INPUT) {
+				cairo_set_source_rgb(cairo, 51.0 / 255, 219.0 / 255, 0);
+			} else {
+				cairo_set_source_rgb(cairo, 219.0 / 255, 51.0 / 255, 0);
+			}
+			cairo_stroke(cairo);
+
+			// Draw borders
+			cairo_set_source_rgb(cairo, 0, 0, 0);
+			cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
+					arc_radius, highlight_start,
+					highlight_start + type_indicator_border_thickness);
+			cairo_stroke(cairo);
+
+			cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
+					arc_radius, highlight_start + TYPE_INDICATOR_RANGE,
+					highlight_start + TYPE_INDICATOR_RANGE +
+						type_indicator_border_thickness);
+			cairo_stroke(cairo);
+		}
+
+		// Draw inner + outer border of the circle
+		cairo_set_source_rgb(cairo, 0, 0, 0);
+		cairo_set_line_width(cairo, 2.0 * surface->scale);
+		cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
+				arc_radius - arc_thickness / 2, 0, 2 * M_PI);
+		cairo_stroke(cairo);
+		cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
+				arc_radius + arc_thickness / 2, 0, 2 * M_PI);
+		cairo_stroke(cairo);
+	}
+
+	wl_surface_set_buffer_scale(surface->surface, surface->scale);
+	wl_surface_attach(surface->surface, surface->current_buffer->buffer, 0, 0);
+	wl_surface_damage(surface->surface, 0, 0, surface->width, surface->height);
+	wl_surface_commit(surface->surface);
+}
+
+void render_frames(struct swaylock_state *state) {
+	struct swaylock_surface *surface;
+	wl_list_for_each(surface, &state->surfaces, link) {
+		render_frame(surface);
+	}
+}