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Add axis events to pointer example

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This commit is contained in:
Drew DeVault 2017-06-13 12:38:57 -04:00
parent 8f284ec0b2
commit 7dfc2c28f1
3 changed files with 37 additions and 2 deletions
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24
example/pointer.c
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@ -23,6 +23,7 @@ struct sample_state {
struct wlr_renderer *renderer;
struct wlr_surface *cat_texture;
int cur_x, cur_y;
float default_color[4];
float clear_color[4];
};
@ -64,8 +65,7 @@ static void handle_pointer_button(struct pointer_state *pstate,
struct sample_state *sample = pstate->compositor->data;
float (*color)[4];
if (state == WLR_BUTTON_RELEASED) {
float _default[4] = { 0.25f, 0.25f, 0.25f, 1 };
color = &_default;
color = &sample->default_color;
} else {
float red[4] = { 0.25f, 0.25f, 0.25f, 1 };
red[button % 3] = 1;
@ -74,8 +74,27 @@ static void handle_pointer_button(struct pointer_state *pstate,
memcpy(&sample->clear_color, color, sizeof(*color));
}
static void handle_pointer_axis(struct pointer_state *pstate,
enum wlr_axis_source source,
enum wlr_axis_orientation orientation,
double delta) {
struct sample_state *sample = pstate->compositor->data;
for (size_t i = 0; i < 3; ++i) {
sample->default_color[i] += delta > 0 ? -0.05f : 0.05f;
if (sample->default_color[i] > 1.0f) {
sample->default_color[i] = 1.0f;
}
if (sample->default_color[i] < 0.0f) {
sample->default_color[i] = 0.0f;
}
}
memcpy(&sample->clear_color, &sample->default_color,
sizeof(sample->clear_color));
}
int main(int argc, char *argv[]) {
struct sample_state state = {
.default_color = { 0.25f, 0.25f, 0.25f, 1 },
.clear_color = { 0.25f, 0.25f, 0.25f, 1 }
};
struct compositor_state compositor;
@ -85,6 +104,7 @@ int main(int argc, char *argv[]) {
compositor.keyboard_key_cb = handle_keyboard_key;
compositor.pointer_motion_cb = handle_pointer_motion;
compositor.pointer_button_cb = handle_pointer_button;
compositor.pointer_axis_cb = handle_pointer_axis;
state.renderer = wlr_gles3_renderer_init();
state.cat_texture = wlr_render_surface_init(state.renderer);