[PATCH weston 2/3] clients: add cliptest program
Pekka Paalanen
ppaalanen at gmail.com
Tue Sep 11 07:02:04 PDT 2012
Cliptest is for controlled testing of the calculate_edges() function in
compositor.c. The function is copied verbatim into cliptest.c.
Signed-off-by: Pekka Paalanen <ppaalanen at gmail.com>
---
clients/.gitignore | 1 +
clients/Makefile.am | 5 +
clients/cliptest.c | 833 +++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 839 insertions(+), 0 deletions(-)
create mode 100644 clients/cliptest.c
diff --git a/clients/.gitignore b/clients/.gitignore
index c0df419..8405777 100644
--- a/clients/.gitignore
+++ b/clients/.gitignore
@@ -1,4 +1,5 @@
clickdot
+cliptest
desktop-shell-client-protocol.h
desktop-shell-protocol.c
dnd
diff --git a/clients/Makefile.am b/clients/Makefile.am
index 1b7fa10..a777772 100644
--- a/clients/Makefile.am
+++ b/clients/Makefile.am
@@ -48,6 +48,7 @@ terminal = weston-terminal
clients_programs = \
flower \
image \
+ cliptest \
dnd \
smoke \
resizor \
@@ -88,6 +89,10 @@ weston_terminal_LDADD = $(toolkit_libs) -lutil
image_SOURCES = image.c
image_LDADD = $(toolkit_libs)
+cliptest_SOURCES = cliptest.c
+cliptest_CPPFLAGS = $(AM_CPPFLAGS) $(PIXMAN_CFLAGS)
+cliptest_LDADD = $(toolkit_libs) $(PIXMAN_LIBS)
+
dnd_SOURCES = dnd.c
dnd_LDADD = $(toolkit_libs)
diff --git a/clients/cliptest.c b/clients/cliptest.c
new file mode 100644
index 0000000..ff18757
--- /dev/null
+++ b/clients/cliptest.c
@@ -0,0 +1,833 @@
+/*
+ * Copyright © 2012 Collabora, Ltd.
+ * Copyright © 2012 Rob Clark
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/* cliptest: for debugging calculate_edges() function, which is copied
+ * from compositor.c.
+ * controls:
+ * clip box position: mouse left drag, keys: w a s d
+ * clip box size: mouse right drag, keys: i j k l
+ * surface orientation: mouse wheel, keys: n m
+ * surface transform disable key: r
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <unistd.h>
+#include <math.h>
+#include <time.h>
+#include <pixman.h>
+#include <cairo.h>
+#include <float.h>
+#include <assert.h>
+
+#include <linux/input.h>
+#include <wayland-client.h>
+
+#include "window.h"
+
+typedef float GLfloat;
+
+struct geometry {
+ pixman_box32_t clip;
+
+ pixman_box32_t surf;
+ float s; /* sin phi */
+ float c; /* cos phi */
+ float phi;
+};
+
+struct weston_surface {
+ struct {
+ int enabled;
+ } transform;
+
+ struct geometry *geometry;
+};
+
+static void
+weston_surface_to_global_float(struct weston_surface *surface,
+ GLfloat sx, GLfloat sy, GLfloat *x, GLfloat *y)
+{
+ struct geometry *g = surface->geometry;
+
+ /* pure rotation around origin by sine and cosine */
+ *x = g->c * sx + g->s * sy;
+ *y = -g->s * sx + g->c * sy;
+}
+
+/* ---------------------- copied begins -----------------------*/
+
+#define max(a, b) (((a) > (b)) ? (a) : (b))
+#define min(a, b) (((a) > (b)) ? (b) : (a))
+#define clip(x, a, b) min(max(x, a), b)
+#define sign(x) ((x) >= 0)
+
+static int
+calculate_edges(struct weston_surface *es, pixman_box32_t *rect,
+ pixman_box32_t *surf_rect, GLfloat *ex, GLfloat *ey)
+{
+ int i, n = 0;
+ GLfloat min_x, max_x, min_y, max_y;
+ GLfloat x[4] = {
+ surf_rect->x1, surf_rect->x2, surf_rect->x2, surf_rect->x1,
+ };
+ GLfloat y[4] = {
+ surf_rect->y1, surf_rect->y1, surf_rect->y2, surf_rect->y2,
+ };
+ GLfloat cx1 = rect->x1;
+ GLfloat cx2 = rect->x2;
+ GLfloat cy1 = rect->y1;
+ GLfloat cy2 = rect->y2;
+
+ GLfloat dist_squared(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2)
+ {
+ GLfloat dx = (x1 - x2);
+ GLfloat dy = (y1 - y2);
+ return dx * dx + dy * dy;
+ }
+
+ void append_vertex(GLfloat x, GLfloat y)
+ {
+ /* don't emit duplicate vertices: */
+ if ((n > 0) && (ex[n-1] == x) && (ey[n-1] == y))
+ return;
+ ex[n] = x;
+ ey[n] = y;
+ n++;
+ }
+
+ /* transform surface to screen space: */
+ for (i = 0; i < 4; i++)
+ weston_surface_to_global_float(es, x[i], y[i], &x[i], &y[i]);
+
+ /* find bounding box: */
+ min_x = max_x = x[0];
+ min_y = max_y = y[0];
+
+ for (i = 1; i < 4; i++) {
+ min_x = min(min_x, x[i]);
+ max_x = max(max_x, x[i]);
+ min_y = min(min_y, y[i]);
+ max_y = max(max_y, y[i]);
+ }
+
+ /* First, simple bounding box check to discard early transformed
+ * surface rects that do not intersect with the clip region:
+ */
+ if ((min_x > cx2) || (max_x < cx1) ||
+ (min_y > cy2) || (max_y < cy1))
+ return 0;
+
+ /* Simple case, bounding box edges are parallel to surface edges,
+ * there will be only four edges. We just need to clip the surface
+ * vertices to the clip rect bounds:
+ */
+ if (!es->transform.enabled) {
+ for (i = 0; i < 4; i++) {
+ ex[n] = clip(x[i], cx1, cx2);
+ ey[n] = clip(y[i], cy1, cy2);
+ n++;
+ }
+ return 4;
+ }
+
+ /* Hard case, transformation applied. We need to find the vertices
+ * of the shape that is the intersection of the clip rect and
+ * transformed surface. This can be anything from 3 to 8 sides.
+ *
+ * Observation: all the resulting vertices will be the intersection
+ * points of the transformed surface and the clip rect, plus the
+ * vertices of the clip rect which are enclosed by the transformed
+ * surface and the vertices of the transformed surface which are
+ * enclosed by the clip rect.
+ *
+ * Observation: there will be zero, one, or two resulting vertices
+ * for each edge of the src rect.
+ *
+ * Loop over four edges of the transformed rect:
+ */
+ for (i = 0; i < 4; i++) {
+ GLfloat x1, y1, x2, y2;
+ int last_n = n;
+
+ x1 = x[i];
+ y1 = y[i];
+
+ /* if this vertex is contained in the clip rect, use it as-is: */
+ if ((cx1 <= x1) && (x1 <= cx2) &&
+ (cy1 <= y1) && (y1 <= cy2))
+ append_vertex(x1, y1);
+
+ /* for remaining, we consider the point as part of a line: */
+ x2 = x[(i+1) % 4];
+ y2 = y[(i+1) % 4];
+
+ if (x1 == x2) {
+ append_vertex(clip(x1, cx1, cx2), clip(y1, cy1, cy2));
+ append_vertex(clip(x2, cx1, cx2), clip(y2, cy1, cy2));
+ } else if (y1 == y2) {
+ append_vertex(clip(x1, cx1, cx2), clip(y1, cy1, cy2));
+ append_vertex(clip(x2, cx1, cx2), clip(y2, cy1, cy2));
+ } else {
+ GLfloat m, c, p;
+ GLfloat tx[2], ty[2];
+ int tn = 0;
+
+ int intersect_horiz(GLfloat y, GLfloat *p)
+ {
+ GLfloat x;
+
+ /* if y does not lie between y1 and y2, no
+ * intersection possible
+ */
+ if (sign(y-y1) == sign(y-y2))
+ return 0;
+
+ x = (y - c) / m;
+
+ /* if x does not lie between cx1 and cx2, no
+ * intersection:
+ */
+ if (sign(x-cx1) == sign(x-cx2))
+ return 0;
+
+ *p = x;
+ return 1;
+ }
+
+ int intersect_vert(GLfloat x, GLfloat *p)
+ {
+ GLfloat y;
+
+ if (sign(x-x1) == sign(x-x2))
+ return 0;
+
+ y = m * x + c;
+
+ if (sign(y-cy1) == sign(y-cy2))
+ return 0;
+
+ *p = y;
+ return 1;
+ }
+
+ /* y = mx + c */
+ m = (y2 - y1) / (x2 - x1);
+ c = y1 - m * x1;
+
+ /* check for up to two intersections with the four edges
+ * of the clip rect. Note that we don't know the orientation
+ * of the transformed surface wrt. the clip rect. So if when
+ * there are two intersection points, we need to put the one
+ * closest to x1,y1 first:
+ */
+
+ /* check top clip rect edge: */
+ if (intersect_horiz(cy1, &p)) {
+ ty[tn] = cy1;
+ tx[tn] = p;
+ tn++;
+ }
+
+ /* check right clip rect edge: */
+ if (intersect_vert(cx2, &p)) {
+ ty[tn] = p;
+ tx[tn] = cx2;
+ tn++;
+ if (tn == 2)
+ goto edge_check_done;
+ }
+
+ /* check bottom clip rect edge: */
+ if (intersect_horiz(cy2, &p)) {
+ ty[tn] = cy2;
+ tx[tn] = p;
+ tn++;
+ if (tn == 2)
+ goto edge_check_done;
+ }
+
+ /* check left clip rect edge: */
+ if (intersect_vert(cx1, &p)) {
+ ty[tn] = p;
+ tx[tn] = cx1;
+ tn++;
+ }
+
+edge_check_done:
+ if (tn == 1) {
+ append_vertex(tx[0], ty[0]);
+ } else if (tn == 2) {
+ if (dist_squared(x1, y1, tx[0], ty[0]) <
+ dist_squared(x1, y1, tx[1], ty[1])) {
+ append_vertex(tx[0], ty[0]);
+ append_vertex(tx[1], ty[1]);
+ } else {
+ append_vertex(tx[1], ty[1]);
+ append_vertex(tx[0], ty[0]);
+ }
+ }
+
+ if (n == last_n) {
+ GLfloat best_x=0, best_y=0;
+ uint32_t d, best_d = (unsigned int)-1; /* distance squared */
+ uint32_t max_d = dist_squared(x2, y2,
+ x[(i+2) % 4], y[(i+2) % 4]);
+
+ /* if there are no vertices on this line, it could be that
+ * there is a vertex of the clip rect that is enclosed by
+ * the transformed surface. Find the vertex of the clip
+ * rect that is reached by the shortest line perpendicular
+ * to the current edge, if any.
+ *
+ * slope of perpendicular is 1/m, so
+ *
+ * cy = -cx/m + c2
+ * c2 = cy + cx/m
+ *
+ */
+
+ int perp_intersect(GLfloat cx, GLfloat cy, uint32_t *d)
+ {
+ GLfloat c2 = cy + cx/m;
+ GLfloat x = (c2 - c) / (m + 1/m);
+
+ /* if the x position of the intersection of the
+ * perpendicular with the transformed edge does
+ * not lie within the bounds of the edge, then
+ * no intersection:
+ */
+ if (sign(x-x1) == sign(x-x2))
+ return 0;
+
+ *d = dist_squared(cx, cy, x, (m * x) + c);
+
+ /* if intersection distance is further away than
+ * opposite edge of surface region, it is invalid:
+ */
+ if (*d > max_d)
+ return 0;
+
+ return 1;
+ }
+
+ if (perp_intersect(cx1, cy1, &d)) {
+ best_x = cx1;
+ best_y = cy1;
+ best_d = d;
+ }
+
+ if (perp_intersect(cx1, cy2, &d) && (d < best_d)) {
+ best_x = cx1;
+ best_y = cy2;
+ best_d = d;
+ }
+
+ if (perp_intersect(cx2, cy2, &d) && (d < best_d)) {
+ best_x = cx2;
+ best_y = cy2;
+ best_d = d;
+ }
+
+ if (perp_intersect(cx2, cy1, &d) && (d < best_d)) {
+ best_x = cx2;
+ best_y = cy1;
+ best_d = d;
+ }
+
+ if (best_d != (unsigned int)-1) // XXX can this happen?
+ append_vertex(best_x, best_y);
+ }
+ }
+
+ }
+
+ return n;
+}
+
+/* ---------------------- copied ends -----------------------*/
+
+static void
+geometry_set_phi(struct geometry *g, float phi)
+{
+ g->phi = phi;
+ g->s = sin(phi);
+ g->c = cos(phi);
+}
+
+static void
+geometry_init(struct geometry *g)
+{
+ g->clip.x1 = -50;
+ g->clip.y1 = -50;
+ g->clip.x2 = -10;
+ g->clip.y2 = -10;
+
+ g->surf.x1 = -20;
+ g->surf.y1 = -20;
+ g->surf.x2 = 20;
+ g->surf.y2 = 20;
+
+ geometry_set_phi(g, 0.0);
+}
+
+struct ui_state {
+ uint32_t button;
+ int down;
+
+ int down_pos[2];
+ struct geometry geometry;
+};
+
+struct cliptest {
+ struct window *window;
+ struct widget *widget;
+ struct display *display;
+ int fullscreen;
+
+ struct ui_state ui;
+
+ struct geometry geometry;
+ struct weston_surface surface;
+};
+
+static void
+draw_polygon_closed(cairo_t *cr, GLfloat *x, GLfloat *y, int n)
+{
+ int i;
+
+ cairo_move_to(cr, x[0], y[0]);
+ for (i = 1; i < n; i++)
+ cairo_line_to(cr, x[i], y[i]);
+ cairo_line_to(cr, x[0], y[0]);
+}
+
+static void
+draw_polygon_labels(cairo_t *cr, GLfloat *x, GLfloat *y, int n)
+{
+ char str[16];
+ int i;
+
+ for (i = 0; i < n; i++) {
+ snprintf(str, 16, "%d", i);
+ cairo_move_to(cr, x[i], y[i]);
+ cairo_show_text(cr, str);
+ }
+}
+
+static void
+draw_coordinates(cairo_t *cr, double ox, double oy, GLfloat *x, GLfloat *y, int n)
+{
+ char str[64];
+ int i;
+ cairo_font_extents_t ext;
+
+ cairo_font_extents(cr, &ext);
+ for (i = 0; i < n; i++) {
+ snprintf(str, 64, "%d: %14.9f, %14.9f", i, x[i], y[i]);
+ cairo_move_to(cr, ox, oy + ext.height * (i + 1));
+ cairo_show_text(cr, str);
+ }
+}
+
+static void
+draw_box(cairo_t *cr, pixman_box32_t *box, struct weston_surface *surface)
+{
+ GLfloat x[4], y[4];
+
+ if (surface) {
+ weston_surface_to_global_float(surface, box->x1, box->y1, &x[0], &y[0]);
+ weston_surface_to_global_float(surface, box->x2, box->y1, &x[1], &y[1]);
+ weston_surface_to_global_float(surface, box->x2, box->y2, &x[2], &y[2]);
+ weston_surface_to_global_float(surface, box->x1, box->y2, &x[3], &y[3]);
+ } else {
+ x[0] = box->x1; y[0] = box->y1;
+ x[1] = box->x2; y[1] = box->y1;
+ x[2] = box->x2; y[2] = box->y2;
+ x[3] = box->x1; y[3] = box->y2;
+ }
+
+ draw_polygon_closed(cr, x, y, 4);
+}
+
+static void
+draw_geometry(cairo_t *cr, struct weston_surface *surface,
+ GLfloat *ex, GLfloat *ey, int n)
+{
+ struct geometry *g = surface->geometry;
+ GLfloat cx, cy;
+
+ draw_box(cr, &g->surf, surface);
+ cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.4);
+ cairo_fill(cr);
+ weston_surface_to_global_float(surface, g->surf.x1 - 4, g->surf.y1 - 4, &cx, &cy);
+ cairo_arc(cr, cx, cy, 1.5, 0.0, 2.0 * M_PI);
+ if (surface->transform.enabled == 0)
+ cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.8);
+ cairo_fill(cr);
+
+ draw_box(cr, &g->clip, NULL);
+ cairo_set_source_rgba(cr, 0.0, 0.0, 1.0, 0.4);
+ cairo_fill(cr);
+
+ draw_polygon_closed(cr, ex, ey, n);
+ cairo_set_source_rgb(cr, 0.0, 1.0, 0.0);
+ cairo_stroke(cr);
+
+ cairo_set_source_rgba(cr, 0.0, 1.0, 0.0, 0.5);
+ draw_polygon_labels(cr, ex, ey, n);
+}
+
+static void
+redraw_handler(struct widget *widget, void *data)
+{
+ struct cliptest *cliptest = data;
+ struct geometry *g = cliptest->surface.geometry;
+ struct rectangle allocation;
+ cairo_t *cr;
+ cairo_surface_t *surface;
+ GLfloat ex[8];
+ GLfloat ey[8];
+ int n;
+
+ n = calculate_edges(&cliptest->surface, &g->clip, &g->surf, ex, ey);
+
+ widget_get_allocation(cliptest->widget, &allocation);
+
+ surface = window_get_surface(cliptest->window);
+ cr = cairo_create(surface);
+ widget_get_allocation(cliptest->widget, &allocation);
+ cairo_rectangle(cr, allocation.x, allocation.y,
+ allocation.width, allocation.height);
+ cairo_clip(cr);
+
+ cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
+ cairo_set_source_rgba(cr, 0, 0, 0, 1);
+ cairo_paint(cr);
+
+ cairo_translate(cr, allocation.x, allocation.y);
+ cairo_set_line_width(cr, 1.0);
+ cairo_move_to(cr, allocation.width / 2.0, 0.0);
+ cairo_line_to(cr, allocation.width / 2.0, allocation.height);
+ cairo_move_to(cr, 0.0, allocation.height / 2.0);
+ cairo_line_to(cr, allocation.width, allocation.height / 2.0);
+ cairo_set_source_rgba(cr, 0.5, 0.5, 0.5, 1.0);
+ cairo_stroke(cr);
+
+ cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
+ cairo_push_group(cr);
+ cairo_translate(cr, allocation.width / 2.0,
+ allocation.height / 2.0);
+ cairo_scale(cr, 4.0, 4.0);
+ cairo_set_line_width(cr, 0.5);
+ cairo_set_line_join(cr, CAIRO_LINE_JOIN_BEVEL);
+ cairo_select_font_face(cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
+ CAIRO_FONT_WEIGHT_BOLD);
+ cairo_set_font_size(cr, 5.0);
+ draw_geometry(cr, &cliptest->surface, ex, ey, n);
+ cairo_pop_group_to_source(cr);
+ cairo_paint(cr);
+
+ cairo_set_source_rgba(cr, 0.0, 1.0, 0.0, 1.0);
+ cairo_select_font_face(cr, "monospace", CAIRO_FONT_SLANT_NORMAL,
+ CAIRO_FONT_WEIGHT_NORMAL);
+ cairo_set_font_size(cr, 12.0);
+ draw_coordinates(cr, 10.0, 10.0, ex, ey, n);
+
+ cairo_destroy(cr);
+
+ cairo_surface_destroy(surface);
+}
+
+static int
+motion_handler(struct widget *widget, struct input *input,
+ uint32_t time, float x, float y, void *data)
+{
+ struct cliptest *cliptest = data;
+ struct ui_state *ui = &cliptest->ui;
+ struct geometry *ref = &ui->geometry;
+ struct geometry *geom = &cliptest->geometry;
+ float dx, dy;
+
+ if (!ui->down)
+ return CURSOR_LEFT_PTR;
+
+ dx = (x - ui->down_pos[0]) * 0.25;
+ dy = (y - ui->down_pos[1]) * 0.25;
+
+ switch (ui->button) {
+ case BTN_LEFT:
+ geom->clip.x1 = ref->clip.x1 + dx;
+ geom->clip.y1 = ref->clip.y1 + dy;
+ /* fall through */
+ case BTN_RIGHT:
+ geom->clip.x2 = ref->clip.x2 + dx;
+ geom->clip.y2 = ref->clip.y2 + dy;
+ break;
+ default:
+ return CURSOR_LEFT_PTR;
+ }
+
+ widget_schedule_redraw(cliptest->widget);
+ return CURSOR_BLANK;
+}
+
+static void
+button_handler(struct widget *widget, struct input *input,
+ uint32_t time, uint32_t button,
+ enum wl_pointer_button_state state, void *data)
+{
+ struct cliptest *cliptest = data;
+ struct ui_state *ui = &cliptest->ui;
+
+ ui->button = button;
+
+ if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
+ ui->down = 1;
+ input_get_position(input, &ui->down_pos[0], &ui->down_pos[1]);
+ } else {
+ ui->down = 0;
+ ui->geometry = cliptest->geometry;
+ }
+}
+
+static void
+axis_handler(struct widget *widget, struct input *input, uint32_t time,
+ uint32_t axis, wl_fixed_t value, void *data)
+{
+ struct cliptest *cliptest = data;
+ struct geometry *geom = &cliptest->geometry;
+
+ if (axis != WL_POINTER_AXIS_VERTICAL_SCROLL)
+ return;
+
+ geometry_set_phi(geom, geom->phi +
+ (M_PI / 12.0) * wl_fixed_to_double(value));
+ cliptest->surface.transform.enabled = 1;
+
+ widget_schedule_redraw(cliptest->widget);
+}
+
+static void
+key_handler(struct window *window, struct input *input, uint32_t time,
+ uint32_t key, uint32_t sym,
+ enum wl_keyboard_key_state state, void *data)
+{
+ struct cliptest *cliptest = data;
+ struct geometry *g = &cliptest->geometry;
+
+ if (state == WL_KEYBOARD_KEY_STATE_RELEASED)
+ return;
+
+ switch (sym) {
+ case XKB_KEY_Escape:
+ display_exit(cliptest->display);
+ return;
+ case XKB_KEY_w:
+ g->clip.y1 -= 1;
+ g->clip.y2 -= 1;
+ break;
+ case XKB_KEY_a:
+ g->clip.x1 -= 1;
+ g->clip.x2 -= 1;
+ break;
+ case XKB_KEY_s:
+ g->clip.y1 += 1;
+ g->clip.y2 += 1;
+ break;
+ case XKB_KEY_d:
+ g->clip.x1 += 1;
+ g->clip.x2 += 1;
+ break;
+ case XKB_KEY_i:
+ g->clip.y2 -= 1;
+ break;
+ case XKB_KEY_j:
+ g->clip.x2 -= 1;
+ break;
+ case XKB_KEY_k:
+ g->clip.y2 += 1;
+ break;
+ case XKB_KEY_l:
+ g->clip.x2 += 1;
+ break;
+ case XKB_KEY_n:
+ geometry_set_phi(g, g->phi + (M_PI / 24.0));
+ cliptest->surface.transform.enabled = 1;
+ break;
+ case XKB_KEY_m:
+ geometry_set_phi(g, g->phi - (M_PI / 24.0));
+ cliptest->surface.transform.enabled = 1;
+ break;
+ case XKB_KEY_r:
+ geometry_set_phi(g, 0.0);
+ cliptest->surface.transform.enabled = 0;
+ break;
+ default:
+ return;
+ }
+
+ widget_schedule_redraw(cliptest->widget);
+}
+
+static void
+keyboard_focus_handler(struct window *window,
+ struct input *device, void *data)
+{
+ struct cliptest *cliptest = data;
+
+ window_schedule_redraw(cliptest->window);
+}
+
+static void
+fullscreen_handler(struct window *window, void *data)
+{
+ struct cliptest *cliptest = data;
+
+ cliptest->fullscreen ^= 1;
+ window_set_fullscreen(window, cliptest->fullscreen);
+}
+
+static struct cliptest *
+cliptest_create(struct display *display)
+{
+ struct cliptest *cliptest;
+
+ cliptest = malloc(sizeof *cliptest);
+ if (cliptest == NULL)
+ return cliptest;
+ memset(cliptest, 0, sizeof *cliptest);
+
+ cliptest->surface.geometry = &cliptest->geometry;
+ cliptest->surface.transform.enabled = 0;
+ geometry_init(&cliptest->geometry);
+ geometry_init(&cliptest->ui.geometry);
+
+ cliptest->window = window_create(display);
+ cliptest->widget = frame_create(cliptest->window, cliptest);
+ window_set_title(cliptest->window, "cliptest");
+ cliptest->display = display;
+
+ window_set_user_data(cliptest->window, cliptest);
+ widget_set_redraw_handler(cliptest->widget, redraw_handler);
+ widget_set_button_handler(cliptest->widget, button_handler);
+ widget_set_motion_handler(cliptest->widget, motion_handler);
+ widget_set_axis_handler(cliptest->widget, axis_handler);
+
+ window_set_keyboard_focus_handler(cliptest->window,
+ keyboard_focus_handler);
+ window_set_key_handler(cliptest->window, key_handler);
+ window_set_fullscreen_handler(cliptest->window, fullscreen_handler);
+
+ /* set minimum size */
+ widget_schedule_resize(cliptest->widget, 200, 100);
+
+ /* set current size */
+ widget_schedule_resize(cliptest->widget, 500, 400);
+
+ return cliptest;
+}
+
+static struct timespec begin_time;
+
+static void
+reset_timer(void)
+{
+ clock_gettime(CLOCK_MONOTONIC, &begin_time);
+}
+
+static double
+read_timer(void)
+{
+ struct timespec t;
+
+ clock_gettime(CLOCK_MONOTONIC, &t);
+ return (double)(t.tv_sec - begin_time.tv_sec) +
+ 1e-9 * (t.tv_nsec - begin_time.tv_nsec);
+}
+
+static int
+benchmark(void)
+{
+ struct weston_surface surface;
+ struct geometry geom;
+ GLfloat ex[8], ey[8];
+ int i;
+ double t;
+ const int N = 1000000;
+
+ geom.clip.x1 = -19;
+ geom.clip.y1 = -19;
+ geom.clip.x2 = 19;
+ geom.clip.y2 = 19;
+
+ geom.surf.x1 = -20;
+ geom.surf.y1 = -20;
+ geom.surf.x2 = 20;
+ geom.surf.y2 = 20;
+
+ geometry_set_phi(&geom, 0.0);
+
+ surface.transform.enabled = 1;
+ surface.geometry = &geom;
+
+ reset_timer();
+ for (i = 0; i < N; i++) {
+ geometry_set_phi(&geom, (float)i / 360.0f);
+ calculate_edges(&surface, &geom.clip, &geom.surf, ex, ey);
+ }
+ t = read_timer();
+
+ printf("%d calls took %g s, average %g us/call\n", N, t, t / N * 1e6);
+
+ return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+ struct display *d;
+ struct cliptest *cliptest;
+
+ if (argc > 1)
+ return benchmark();
+
+ d = display_create(argc, argv);
+ if (d == NULL) {
+ fprintf(stderr, "failed to create display: %m\n");
+ return -1;
+ }
+
+ cliptest = cliptest_create(d);
+ display_run(d);
+
+ widget_destroy(cliptest->widget);
+ window_destroy(cliptest->window);
+ free(cliptest);
+
+ return 0;
+}
--
1.7.8.6
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