Demonstrate pointer button event in example
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@ -23,6 +23,7 @@ struct sample_state {
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struct wlr_renderer *renderer;
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struct wlr_surface *cat_texture;
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int cur_x, cur_y;
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float clear_color[4];
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};
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static void handle_output_frame(struct output_state *output, struct timespec *ts) {
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@ -31,6 +32,9 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts
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struct wlr_output *wlr_output = output->output;
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wlr_renderer_begin(sample->renderer, wlr_output);
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glClearColor(sample->clear_color[0], sample->clear_color[1],
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sample->clear_color[2], sample->clear_color[3]);
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glClear(GL_COLOR_BUFFER_BIT);
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float matrix[16];
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wlr_surface_get_matrix(sample->cat_texture, &matrix,
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@ -55,14 +59,32 @@ static void handle_pointer_motion(struct pointer_state *pstate,
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state->cur_y += d_y;
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}
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static void handle_pointer_button(struct pointer_state *pstate,
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uint32_t button, enum wlr_button_state state) {
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struct sample_state *sample = pstate->compositor->data;
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float (*color)[4];
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if (state == WLR_BUTTON_RELEASED) {
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float _default[4] = { 0.25f, 0.25f, 0.25f, 1 };
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color = &_default;
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} else {
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float red[4] = { 0.25f, 0.25f, 0.25f, 1 };
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red[button % 3] = 1;
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color = &red;
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}
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memcpy(&sample->clear_color, color, sizeof(*color));
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}
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int main(int argc, char *argv[]) {
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struct sample_state state = { 0 };
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struct sample_state state = {
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.clear_color = { 0.25f, 0.25f, 0.25f, 1 }
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};
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struct compositor_state compositor;
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compositor_init(&compositor);
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compositor.output_frame_cb = handle_output_frame;
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compositor.pointer_motion_cb = handle_pointer_motion;
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compositor.keyboard_key_cb = handle_keyboard_key;
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compositor.pointer_motion_cb = handle_pointer_motion;
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compositor.pointer_button_cb = handle_pointer_button;
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state.renderer = wlr_gles3_renderer_init();
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state.cat_texture = wlr_render_surface_init(state.renderer);
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@ -74,7 +74,17 @@ static void pointer_motion_notify(struct wl_listener *listener, void *data) {
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struct wlr_pointer_motion *event = data;
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struct pointer_state *pstate = wl_container_of(listener, pstate, motion);
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if (pstate->compositor->pointer_motion_cb) {
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pstate->compositor->pointer_motion_cb(pstate, event->delta_x, event->delta_y);
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pstate->compositor->pointer_motion_cb(pstate,
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event->delta_x, event->delta_y);
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}
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}
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static void pointer_button_notify(struct wl_listener *listener, void *data) {
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struct wlr_pointer_button *event = data;
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struct pointer_state *pstate = wl_container_of(listener, pstate, button);
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if (pstate->compositor->pointer_button_cb) {
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pstate->compositor->pointer_button_cb(pstate,
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event->button, event->state);
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}
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}
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@ -87,7 +97,9 @@ static void pointer_add(struct wlr_input_device *device, struct compositor_state
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wl_list_init(&pstate->button.link);
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wl_list_init(&pstate->axis.link);
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pstate->motion.notify = pointer_motion_notify;
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pstate->button.notify = pointer_button_notify;
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wl_signal_add(&device->pointer->events.motion, &pstate->motion);
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wl_signal_add(&device->pointer->events.button, &pstate->button);
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wl_list_insert(&state->pointers, &pstate->link);
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}
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@ -47,7 +47,10 @@ struct compositor_state {
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void (*keyboard_remove_cb)(struct keyboard_state *s);
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void (*keyboard_key_cb)(struct keyboard_state *s, xkb_keysym_t sym,
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enum wlr_key_state key_state);
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void (*pointer_motion_cb)(struct pointer_state *s, double d_x, double d_y);
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void (*pointer_motion_cb)(struct pointer_state *s,
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double d_x, double d_y);
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void (*pointer_button_cb)(struct pointer_state *s,
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uint32_t button, enum wlr_button_state state);
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struct wl_display *display;
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struct wl_event_loop *event_loop;
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