Refactor windowing from egl to window_x11/window_wayland, yolo

1 files changed, 162 insertions, 0 deletions

diff --git a/src/window/window_x11.c b/src/window/window_x11.c
new file mode 100644
index 0000000..55b0a75
--- /dev/null
+++ b/src/window/window_x11.c
@@ -0,0 +1,162 @@
+#include "../../include/window/window_x11.h"
+
+#include "../../include/vec2.h"
+#include "../../include/defs.h"
+#include "../../include/utils.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <X11/Xlib.h>
+
+#define GSR_MAX_OUTPUTS 32
+
+typedef struct {
+    char *name;
+    vec2i pos;
+    vec2i size;
+    uint32_t connector_id;
+    gsr_monitor_rotation rotation;
+    uint32_t monitor_identifier; /* crtc id */
+} gsr_x11_output;
+
+typedef struct {
+    Display *display;
+    Window window;
+    gsr_x11_output outputs[GSR_MAX_OUTPUTS];
+    int num_outputs;
+    XEvent xev;
+} gsr_window_x11;
+
+static void store_x11_monitor(const gsr_monitor *monitor, void *userdata) {
+    gsr_window_x11 *window_x11 = userdata;
+    if(window_x11->num_outputs == GSR_MAX_OUTPUTS) {
+        fprintf(stderr, "gsr warning: reached maximum outputs (%d), ignoring output %s\n", GSR_MAX_OUTPUTS, monitor->name);
+        return;
+    }
+
+    char *monitor_name = strdup(monitor->name);
+    if(!monitor_name)
+        return;
+
+    const int index = window_x11->num_outputs;
+    window_x11->outputs[index].name = monitor_name;
+    window_x11->outputs[index].pos = monitor->pos;
+    window_x11->outputs[index].size = monitor->size;
+    window_x11->outputs[index].connector_id = monitor->connector_id;
+    window_x11->outputs[index].rotation = monitor->rotation;
+    window_x11->outputs[index].monitor_identifier = monitor->monitor_identifier;
+    ++window_x11->num_outputs;
+}
+
+static void gsr_window_x11_deinit(gsr_window_x11 *self) {
+    if(self->window) {
+        XDestroyWindow(self->display, self->window);
+        self->window = None;
+    }
+
+    for(int i = 0; i < self->num_outputs; ++i) {
+        if(self->outputs[i].name) {
+            free(self->outputs[i].name);
+            self->outputs[i].name = NULL;
+        }
+    }
+    self->num_outputs = 0;
+}
+
+static bool gsr_window_x11_init(gsr_window_x11 *self) {
+    self->window = XCreateWindow(self->display, DefaultRootWindow(self->display), 0, 0, 16, 16, 0, CopyFromParent, InputOutput, CopyFromParent, 0, NULL);
+    if(!self->window) {
+        fprintf(stderr, "gsr error: gsr_window_x11_init failed: failed to create gl window\n");
+        return false;
+    }
+
+    self->num_outputs = 0;
+    for_each_active_monitor_output_x11_not_cached(self->display, store_x11_monitor, self);
+    return true;
+}
+
+static void gsr_window_x11_destroy(gsr_window *window) {
+    gsr_window_x11 *self = window->priv;
+    gsr_window_x11_deinit(self);
+    free(self);
+    free(window);
+}
+
+static bool gsr_window_x11_process_event(gsr_window *window) {
+    gsr_window_x11 *self = window->priv;
+    if(XPending(self->display)) {
+        XNextEvent(self->display, &self->xev);
+        return true;
+    }
+    return false;
+}
+
+static XEvent* gsr_window_x11_get_event_data(gsr_window *window) {
+    gsr_window_x11 *self = window->priv;
+    return &self->xev;
+}
+
+static gsr_display_server gsr_window_x11_get_display_server(void) {
+    return GSR_DISPLAY_SERVER_X11;
+}
+
+static void* gsr_window_x11_get_display(gsr_window *window) {
+    gsr_window_x11 *self = window->priv;
+    return self->display;
+}
+
+static void* gsr_window_x11_get_window(gsr_window *window) {
+    gsr_window_x11 *self = window->priv;
+    return (void*)self->window;
+}
+
+static void gsr_window_x11_for_each_active_monitor_output_cached(const gsr_window *window, active_monitor_callback callback, void *userdata) {
+    const gsr_window_x11 *self = window->priv;
+    for(int i = 0; i < self->num_outputs; ++i) {
+        const gsr_x11_output *output = &self->outputs[i];
+        const gsr_monitor monitor = {
+            .name = output->name,
+            .name_len = strlen(output->name),
+            .pos = output->pos,
+            .size = output->size,
+            .connector_id = output->connector_id,
+            .rotation = output->rotation,
+            .monitor_identifier = output->monitor_identifier
+        };
+        callback(&monitor, userdata);
+    }
+}
+
+gsr_window* gsr_window_x11_create(Display *display) {
+    gsr_window *window = calloc(1, sizeof(gsr_window));
+    if(!window)
+        return window;
+
+    gsr_window_x11 *window_x11 = calloc(1, sizeof(gsr_window_x11));
+    if(!window_x11) {
+        free(window);
+        return NULL;
+    }
+
+    window_x11->display = display;
+    if(!gsr_window_x11_init(window_x11)) {
+        free(window_x11);
+        free(window);
+        return NULL;
+    }
+
+    *window = (gsr_window) {
+        .destroy = gsr_window_x11_destroy,
+        .process_event = gsr_window_x11_process_event,
+        .get_event_data = gsr_window_x11_get_event_data,
+        .get_display_server = gsr_window_x11_get_display_server,
+        .get_display = gsr_window_x11_get_display,
+        .get_window = gsr_window_x11_get_window,
+        .for_each_active_monitor_output_cached = gsr_window_x11_for_each_active_monitor_output_cached,
+        .priv = window_x11
+    };
+
+    return window;
+}