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output-layout.c
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output-layout.c
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#define _XOPEN_SOURCE 500
#include <limits.h>
#include <math.h>
#include "output-layout.h"
#include "grim.h"
void get_output_layout_extents(struct grim_state *state, struct grim_box *box) {
int32_t x1 = INT_MAX, y1 = INT_MAX;
int32_t x2 = INT_MIN, y2 = INT_MIN;
struct grim_output *output;
wl_list_for_each(output, &state->outputs, link) {
if (output->logical_geometry.x < x1) {
x1 = output->logical_geometry.x;
}
if (output->logical_geometry.y < y1) {
y1 = output->logical_geometry.y;
}
if (output->logical_geometry.x + output->logical_geometry.width > x2) {
x2 = output->logical_geometry.x + output->logical_geometry.width;
}
if (output->logical_geometry.y + output->logical_geometry.height > y2) {
y2 = output->logical_geometry.y + output->logical_geometry.height;
}
}
box->x = x1;
box->y = y1;
box->width = x2 - x1;
box->height = y2 - y1;
}
void apply_output_transform(enum wl_output_transform transform,
int32_t *width, int32_t *height) {
if (transform & WL_OUTPUT_TRANSFORM_90) {
int32_t tmp = *width;
*width = *height;
*height = tmp;
}
}
double get_output_rotation(enum wl_output_transform transform) {
switch (transform & ~WL_OUTPUT_TRANSFORM_FLIPPED) {
case WL_OUTPUT_TRANSFORM_90:
return M_PI / 2;
case WL_OUTPUT_TRANSFORM_180:
return M_PI;
case WL_OUTPUT_TRANSFORM_270:
return 3 * M_PI / 2;
}
return 0;
}
int get_output_flipped(enum wl_output_transform transform) {
return transform & WL_OUTPUT_TRANSFORM_FLIPPED ? -1 : 1;
}
void guess_output_logical_geometry(struct grim_output *output) {
output->logical_geometry.x = output->geometry.x;
output->logical_geometry.y = output->geometry.y;
output->logical_geometry.width = output->geometry.width / output->scale;
output->logical_geometry.height = output->geometry.height / output->scale;
apply_output_transform(output->transform,
&output->logical_geometry.width,
&output->logical_geometry.height);
output->logical_scale = output->scale;
}