mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-11-02 03:45:58 +01:00
172 lines
5.2 KiB
C
172 lines
5.2 KiB
C
#define _POSIX_C_SOURCE 199309L
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#define _XOPEN_SOURCE 500
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <string.h>
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#include <unistd.h>
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#include <wayland-server.h>
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#include <wayland-server-protocol.h>
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#include <xkbcommon/xkbcommon.h>
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#include <GLES2/gl2.h>
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#include <wlr/render/matrix.h>
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#include <wlr/render/gles2.h>
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#include <wlr/render.h>
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#include <wlr/backend.h>
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#include <wlr/backend/session.h>
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#include <wlr/types/wlr_output.h>
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#include <wlr/types/wlr_tablet_tool.h>
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#include <wlr/types/wlr_tablet_pad.h>
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#include <wlr/util/log.h>
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#include <math.h>
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#include "support/shared.h"
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#include "support/cat.h"
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struct sample_state {
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struct wlr_renderer *renderer;
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bool proximity, tap, button;
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double distance;
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double pressure;
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double x_mm, y_mm;
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double width_mm, height_mm;
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struct wl_list link;
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float tool_color[4];
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float pad_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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struct compositor_state *state = output->compositor;
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struct sample_state *sample = state->data;
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struct wlr_output *wlr_output = output->output;
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int32_t width, height;
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wlr_output_effective_resolution(wlr_output, &width, &height);
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wlr_output_make_current(wlr_output, NULL);
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wlr_renderer_begin(sample->renderer, wlr_output);
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wlr_renderer_clear(sample->renderer, &(float[]){0.25f, 0.25f, 0.25f, 1});
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float matrix[16], view[16];
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float distance = 0.8f * (1 - sample->distance);
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float tool_color[4] = { distance, distance, distance, 1 };
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for (size_t i = 0; sample->button && i < 4; ++i) {
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tool_color[i] = sample->tool_color[i];
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}
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float scale = 4;
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float pad_width = sample->width_mm * scale;
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float pad_height = sample->height_mm * scale;
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float left = width / 2.0f - pad_width / 2.0f;
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float top = height / 2.0f - pad_height / 2.0f;
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wlr_matrix_translate(&matrix, left, top, 0);
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wlr_matrix_scale(&view, pad_width, pad_height, 1);
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wlr_matrix_mul(&matrix, &view, &view);
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wlr_matrix_mul(&wlr_output->transform_matrix, &view, &matrix);
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wlr_render_colored_quad(sample->renderer, &sample->pad_color, &matrix);
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if (sample->proximity) {
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wlr_matrix_translate(&matrix,
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sample->x_mm * scale - 8 * (sample->pressure + 1) + left,
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sample->y_mm * scale - 8 * (sample->pressure + 1) + top, 0);
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wlr_matrix_scale(&view,
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16 * (sample->pressure + 1),
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16 * (sample->pressure + 1), 1);
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wlr_matrix_mul(&matrix, &view, &view);
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wlr_matrix_mul(&wlr_output->transform_matrix, &view, &matrix);
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wlr_render_colored_ellipse(sample->renderer, &tool_color, &matrix);
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}
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wlr_renderer_end(sample->renderer);
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wlr_output_swap_buffers(wlr_output, NULL, NULL);
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}
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static void handle_tool_axis(struct tablet_tool_state *tstate,
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struct wlr_event_tablet_tool_axis *event) {
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struct sample_state *sample = tstate->compositor->data;
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sample->width_mm = event->width_mm;
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sample->height_mm = event->height_mm;
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if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X)) {
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sample->x_mm = event->x_mm;
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}
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if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
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sample->y_mm = event->y_mm;
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}
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if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_DISTANCE)) {
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sample->distance = event->distance;
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}
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if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_PRESSURE)) {
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sample->pressure = event->pressure;
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}
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}
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static void handle_tool_proximity(struct tablet_tool_state *tstate,
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enum wlr_tablet_tool_proximity_state state) {
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struct sample_state *sample = tstate->compositor->data;
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sample->proximity = state == WLR_TABLET_TOOL_PROXIMITY_IN;
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}
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static void handle_tool_button(struct tablet_tool_state *tstate,
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uint32_t button, enum wlr_button_state state) {
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struct sample_state *sample = tstate->compositor->data;
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if (state == WLR_BUTTON_RELEASED) {
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sample->button = false;
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} else {
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sample->button = true;
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for (size_t i = 0; i < 3; ++i) {
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if (button % 3 == i) {
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sample->tool_color[i] = 0;
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} else {
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sample->tool_color[i] = 1;
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}
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}
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}
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}
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static void handle_pad_button(struct tablet_pad_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 default_color[4] = { 0.75, 0.75, 0.75, 1.0 };
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if (state == WLR_BUTTON_RELEASED) {
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memcpy(sample->pad_color, default_color, sizeof(default_color));
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} else {
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for (size_t i = 0; i < 3; ++i) {
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if (button % 3 == i) {
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sample->pad_color[i] = 0;
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} else {
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sample->pad_color[i] = 1;
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}
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}
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}
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}
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int main(int argc, char *argv[]) {
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wlr_log_init(L_DEBUG, NULL);
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struct sample_state state = {
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.tool_color = { 1, 1, 1, 1 },
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.pad_color = { 0.75, 0.75, 0.75, 1.0 }
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};
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struct compositor_state compositor = { 0,
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.data = &state,
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.output_frame_cb = handle_output_frame,
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.tool_axis_cb = handle_tool_axis,
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.tool_proximity_cb = handle_tool_proximity,
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.tool_button_cb = handle_tool_button,
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.pad_button_cb = handle_pad_button,
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};
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compositor_init(&compositor);
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state.renderer = wlr_gles2_renderer_create(compositor.backend);
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if (!state.renderer) {
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wlr_log(L_ERROR, "Could not start compositor, OOM");
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exit(EXIT_FAILURE);
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}
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if (!wlr_backend_start(compositor.backend)) {
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wlr_log(L_ERROR, "Failed to start backend");
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wlr_backend_destroy(compositor.backend);
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exit(1);
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}
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wl_display_run(compositor.display);
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wlr_renderer_destroy(state.renderer);
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compositor_fini(&compositor);
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}
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