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gtk2/demos/gtk-demo/gtkshaderbin.c

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gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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#include "gtkshaderbin.h"
typedef struct {
GskGLShader *shader;
GtkStateFlags state;
GtkStateFlags state_mask;
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
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float extra_border;
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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gboolean compiled;
gboolean compiled_ok;
} ShaderInfo;
struct _GtkShaderBin
{
GtkWidget parent_instance;
GtkWidget *child;
ShaderInfo *active_shader;
GPtrArray *shaders;
guint tick_id;
float time;
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
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float mouse_x, mouse_y;
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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gint64 first_frame_time;
};
struct _GtkShaderBinClass
{
GtkWidgetClass parent_class;
};
G_DEFINE_TYPE (GtkShaderBin, gtk_shader_bin, GTK_TYPE_WIDGET)
static void
shader_info_free (ShaderInfo *info)
{
g_object_unref (info->shader);
g_free (info);
}
static void
gtk_shader_bin_finalize (GObject *object)
{
GtkShaderBin *self = GTK_SHADER_BIN (object);
g_ptr_array_free (self->shaders, TRUE);
G_OBJECT_CLASS (gtk_shader_bin_parent_class)->finalize (object);
}
static void
gtk_shader_bin_dispose (GObject *object)
{
GtkShaderBin *self = GTK_SHADER_BIN (object);
g_clear_pointer (&self->child, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_shader_bin_parent_class)->dispose (object);
}
static gboolean
gtk_shader_bin_tick (GtkWidget *widget,
GdkFrameClock *frame_clock,
gpointer unused)
{
GtkShaderBin *self = GTK_SHADER_BIN (widget);
gint64 frame_time;
frame_time = gdk_frame_clock_get_frame_time (frame_clock);
if (self->first_frame_time == 0)
self->first_frame_time = frame_time;
self->time = (frame_time - self->first_frame_time) / (float)G_USEC_PER_SEC;
gtk_widget_queue_draw (widget);
return G_SOURCE_CONTINUE;
}
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
2020-09-30 09:40:37 +00:00
static void
motion_cb (GtkEventControllerMotion *controller,
double x,
double y,
GtkShaderBin *self)
{
self->mouse_x = x;
self->mouse_y = y;
}
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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static void
gtk_shader_bin_init (GtkShaderBin *self)
{
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
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GtkEventController *controller;
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
2020-09-21 19:05:04 +00:00
self->shaders = g_ptr_array_new_with_free_func ((GDestroyNotify)shader_info_free);
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
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controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "motion", G_CALLBACK (motion_cb), self);
gtk_widget_add_controller (GTK_WIDGET (self), controller);
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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}
void
gtk_shader_bin_update_active_shader (GtkShaderBin *self)
{
GtkStateFlags new_state = gtk_widget_get_state_flags (GTK_WIDGET (self));
ShaderInfo *new_shader = NULL;
for (int i = 0; i < self->shaders->len; i++)
{
ShaderInfo *info = g_ptr_array_index (self->shaders, i);
if ((info->state_mask & new_state) == info->state)
{
new_shader = info;
break;
}
}
if (self->active_shader == new_shader)
return;
self->active_shader = new_shader;
self->first_frame_time = 0;
if (self->active_shader)
{
if (self->tick_id == 0)
self->tick_id = gtk_widget_add_tick_callback (GTK_WIDGET (self),
gtk_shader_bin_tick,
NULL, NULL);
}
else
{
if (self->tick_id != 0)
{
gtk_widget_remove_tick_callback (GTK_WIDGET (self), self->tick_id);
self->tick_id = 0;
}
}
gtk_widget_queue_draw (GTK_WIDGET (self));
}
static void
gtk_shader_bin_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state_flags)
{
GtkShaderBin *self = GTK_SHADER_BIN (widget);
gtk_shader_bin_update_active_shader (self);
}
void
gtk_shader_bin_add_shader (GtkShaderBin *self,
GskGLShader *shader,
GtkStateFlags state,
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
2020-09-30 09:40:37 +00:00
GtkStateFlags state_mask,
float extra_border)
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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{
ShaderInfo *info = g_new0 (ShaderInfo, 1);
info->shader = g_object_ref (shader);
info->state = state;
info->state_mask = state_mask;
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
2020-09-30 09:40:37 +00:00
info->extra_border = extra_border;
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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g_ptr_array_add (self->shaders, info);
gtk_shader_bin_update_active_shader (self);
}
void
gtk_shader_bin_set_child (GtkShaderBin *self,
GtkWidget *child)
{
if (self->child == child)
return;
g_clear_pointer (&self->child, gtk_widget_unparent);
if (child)
{
self->child = child;
gtk_widget_set_parent (child, GTK_WIDGET (self));
}
}
GtkWidget *
gtk_shader_bin_get_child (GtkShaderBin *self)
{
return self->child;
}
static void
gtk_shader_bin_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkShaderBin *self = GTK_SHADER_BIN (widget);
int width, height;
width = gtk_widget_get_width (widget);
height = gtk_widget_get_height (widget);
if (self->active_shader)
{
if (!self->active_shader->compiled)
{
GtkNative *native = gtk_widget_get_native (widget);
GskRenderer *renderer = gtk_native_get_renderer (native);
GError *error = NULL;
self->active_shader->compiled = TRUE;
self->active_shader->compiled_ok =
gsk_gl_shader_compile (self->active_shader->shader,
renderer, &error);
if (!self->active_shader->compiled_ok)
{
g_warning ("GtkShaderBin failed to compile shader: %s", error->message);
g_error_free (error);
}
}
if (self->active_shader->compiled_ok)
{
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
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float border = self->active_shader->extra_border;
graphene_vec2_t mouse;
graphene_vec2_init (&mouse, self->mouse_x + border, self->mouse_y + border);
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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gtk_snapshot_push_gl_shader (snapshot, self->active_shader->shader,
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
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&GRAPHENE_RECT_INIT(-border, -border, width+2*border, height+2*border),
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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gsk_gl_shader_format_args (self->active_shader->shader,
"u_time", self->time,
gtk-demo: Make gltransitions demo a bit snazzier This adds a bunch of snazz to the gltransitions demo. It is perhaps a bit overloaded now, but it demos everything that we can do. Changes: * The fire shader is now not a bin, it just renders an animating background with no textures involved. * The stacks don't all start on the same page. * The shaderbin passes the mouse coordinate to the shader. * The shaderbin allows specifying a "border" so that you can cause effects outside the bin child (something that is new to gtk4). * All the buttons and the stacks are now in shader-bins that runs a wobbly-widget effect based on the mouse position that wobbles outside the child allocation.
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"u_mouse", &mouse,
gtk-demo: Add GskGLShaderNode demo Add adds a demo showing off GskGLShaderNode in various ways. It has a transistion widget, using some examples from gl-transitions.com, with child widgets being both images, a GL area and real widgets (that let you edit the transition shaders themselves. It also has a fancy fire effect on hove on the buttons.
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NULL));
gtk_widget_snapshot_child (widget, self->child, snapshot);
gtk_snapshot_gl_shader_pop_texture (snapshot);
gtk_snapshot_pop (snapshot);
return;
}
}
/* Non-shader fallback */
gtk_widget_snapshot_child (widget, self->child, snapshot);
}
static void
gtk_shader_bin_class_init (GtkShaderBinClass *class)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = gtk_shader_bin_finalize;
object_class->dispose = gtk_shader_bin_dispose;
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
widget_class->snapshot = gtk_shader_bin_snapshot;
widget_class->state_flags_changed = gtk_shader_bin_state_flags_changed;
}
GtkWidget *
gtk_shader_bin_new (void)
{
GtkShaderBin *self;
self = g_object_new (GTK_TYPE_SHADER_BIN, NULL);
return GTK_WIDGET (self);
}
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