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#include <wayfire/view-transform.hpp>
#include <wayfire/opengl.hpp>
#include <wayfire/plugin.hpp>
#include <wayfire/signal-definitions.hpp>
#include <wayfire/util/log.hpp>
namespace
{
const std::string vertex_source = R"(
#version 100
attribute mediump vec2 position;
varying mediump vec2 fposition;
uniform mat4 matrix;
void main() {
gl_Position = matrix * vec4(position, 0.0, 1.0);
fposition = position;
})";
const std::string frag_source = R"(
#version 100
@builtin_ext@
varying mediump vec2 fposition;
@builtin@
// Top left corner
uniform mediump vec2 top_left;
// Top left corner with shadows included
uniform mediump vec2 full_top_left;
// Bottom right corner
uniform mediump vec2 bottom_right;
// Bottom right corner with shadows included
uniform mediump vec2 full_bottom_right;
// Rounding radius
const mediump float radius = 20.0;
void main()
{
mediump vec2 corner_dist = min(fposition - top_left, bottom_right - fposition);
if (max(corner_dist.x, corner_dist.y) < radius)
{
if (distance(corner_dist, vec2(radius, radius)) > radius)
{
discard;
}
}
highp vec2 uv = (fposition - full_top_left) / (full_bottom_right - full_top_left);
uv.y = 1.0 - uv.y;
gl_FragColor = get_pixel(uv);
})";
}
class rounded_corners_transformer_t : public wf::view_transformer_t
{
public:
uint32_t get_z_order() override
{
return wf::TRANSFORMER_2D - 1;
}
wf::region_t transform_opaque_region(
wf::geometry_t box, wf::region_t region) override
{
(void)box;
(void)region;
return {};
}
wf::pointf_t transform_point(
wf::geometry_t view, wf::pointf_t point) override
{
(void)view;
return point;
}
wf::pointf_t untransform_point(
wf::geometry_t view, wf::pointf_t point) override
{
(void)view;
return point;
}
wf::geometry_t get_bounding_box(wf::geometry_t bbox, wlr_box region) override
{
(void)bbox;
return wf::geometry_intersection(this->view->get_wm_geometry(), region);
}
std::vector<GLfloat> vertex_data;
void upload_data(wlr_box src_box)
{
auto geometry = view->get_wm_geometry();
float x = geometry.x, y = geometry.y,
w = geometry.width, h = geometry.height;
vertex_data = {
x, y + h,
x + w, y + h,
x + w, y,
x, y,
};
program.attrib_pointer("position", 2, 0, vertex_data.data(), GL_FLOAT);
program.uniform2f("top_left", x, y);
program.uniform2f("bottom_right", x + w, y + h);
program.uniform2f("full_top_left", src_box.x, src_box.y);
program.uniform2f("full_bottom_right",
src_box.x + src_box.width, src_box.y + src_box.height);
}
void render_with_damage(wf::texture_t src_tex, wlr_box src_box,
const wf::region_t& damage, const wf::framebuffer_t& target_fb) override
{
OpenGL::render_begin(target_fb);
program.use(src_tex.type);
program.set_active_texture(src_tex);
upload_data(src_box);
program.uniformMatrix4f("matrix", target_fb.get_orthographic_projection());
GL_CALL(glEnable(GL_BLEND));
GL_CALL(glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA));
for (const auto& box : damage)
{
target_fb.logic_scissor(wlr_box_from_pixman_box(box));
GL_CALL(glDrawArrays(GL_TRIANGLE_FAN, 0, 4));
}
GL_CALL(glDisable(GL_BLEND));
program.deactivate();
OpenGL::render_end();
}
rounded_corners_transformer_t(wayfire_view view)
{
this->view = view;
OpenGL::render_begin();
program.compile(vertex_source, frag_source);
OpenGL::render_end();
}
virtual ~rounded_corners_transformer_t()
{}
private:
wayfire_view view;
OpenGL::program_t program;
};
class wayfire_rounded_corners_t : public wf::plugin_interface_t
{
public:
void init() override
{
output->connect_signal("view-mapped", &on_map);
}
wf::signal_connection_t on_map = [=] (wf::signal_data_t *data)
{
auto view = wf::get_signaled_view(data);
// Ignore panels, backgrounds, etc.
if (view->role == wf::VIEW_ROLE_TOPLEVEL)
{
view->add_transformer(
std::make_unique<rounded_corners_transformer_t>(view));
}
};
};
DECLARE_WAYFIRE_PLUGIN(wayfire_rounded_corners_t);