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a58a18b63bf8ab5ba0380db20d909b0c64f704ad
squeekboard/eek/eek-renderer.c
Dorota Czaplejewicz ce223e04e6 icons: Fix scaling to 16 units of scale
2019-10-29 13:32:53 +00:00

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/*
* Copyright (C) 2010-2011 Daiki Ueno <ueno@unixuser.org>
* Copyright (C) 2010-2011 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "config.h"
#include <math.h>
#include <string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "eek-keyboard.h"
#include "eek-renderer.h"
enum {
PROP_0,
PROP_PCONTEXT,
PROP_LAST
};
typedef struct _EekRendererPrivate
{
LevelKeyboard *keyboard;
PangoContext *pcontext;
GtkCssProvider *css_provider;
GtkStyleContext *view_context;
GtkStyleContext *button_context; // TODO: maybe move a copy to each button
gdouble border_width;
gdouble allocation_width;
gdouble allocation_height;
gdouble scale;
gint scale_factor; /* the outputs scale factor */
gint origin_x;
gint origin_y;
PangoFontDescription *ascii_font;
PangoFontDescription *font;
// TODO: Drop those or transform into general button surface caches
GHashTable *outline_surface_cache;
GHashTable *active_outline_surface_cache;
GHashTable *icons;
cairo_surface_t *keyboard_surface;
} EekRendererPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (EekRenderer, eek_renderer, G_TYPE_OBJECT)
/* eek-keyboard-drawing.c */
static void eek_renderer_real_render_button_label (EekRenderer *self,
PangoLayout *layout,
const struct squeek_button *button);
static void invalidate (EekRenderer *renderer);
static void render_button (EekRenderer *self,
cairo_t *cr, EekBounds view_bounds, struct button_place *place,
gboolean pressed, gboolean locked);
struct _CreateKeyboardSurfaceCallbackData {
cairo_t *cr;
EekRenderer *renderer;
struct squeek_view *view;
struct squeek_row *row;
};
typedef struct _CreateKeyboardSurfaceCallbackData CreateKeyboardSurfaceCallbackData;
static void
create_keyboard_surface_button_callback (struct squeek_button *button,
gpointer user_data)
{
CreateKeyboardSurfaceCallbackData *data = user_data;
EekBounds bounds = squeek_button_get_bounds(button);
cairo_save (data->cr);
cairo_translate (data->cr, bounds.x, bounds.y);
cairo_rectangle (data->cr,
0.0,
0.0,
bounds.width + 100,
bounds.height + 100);
cairo_clip (data->cr);
struct button_place place = {
.row = data->row,
.button = button,
};
render_button (data->renderer, data->cr, squeek_view_get_bounds(data->view), &place, FALSE, FALSE);
cairo_restore (data->cr);
}
static void
create_keyboard_surface_row_callback (struct squeek_row *row,
gpointer user_data)
{
CreateKeyboardSurfaceCallbackData *data = user_data;
EekBounds bounds = squeek_row_get_bounds(row);
cairo_save (data->cr);
cairo_translate (data->cr, bounds.x, bounds.y);
gint angle = squeek_row_get_angle (row);
cairo_rotate (data->cr, angle * G_PI / 180);
data->row = row;
squeek_row_foreach(row, create_keyboard_surface_button_callback, data);
cairo_restore (data->cr);
}
static void
render_keyboard_surface (EekRenderer *renderer, struct squeek_view *view)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
EekColor foreground;
eek_renderer_get_foreground_color (priv->view_context, &foreground);
EekBounds bounds = squeek_view_get_bounds (level_keyboard_current(priv->keyboard));
CreateKeyboardSurfaceCallbackData data = {
.cr = cairo_create (priv->keyboard_surface),
.renderer = renderer,
.view = view,
};
/* Paint the background covering the entire widget area */
gtk_render_background (priv->view_context,
data.cr,
0, 0,
priv->allocation_width, priv->allocation_height);
gtk_render_frame (priv->view_context,
data.cr,
0, 0,
priv->allocation_width, priv->allocation_height);
cairo_save (data.cr);
cairo_scale (data.cr, priv->scale, priv->scale);
cairo_translate (data.cr, bounds.x, bounds.y);
cairo_set_source_rgba (data.cr,
foreground.red,
foreground.green,
foreground.blue,
foreground.alpha);
/* draw rows */
squeek_view_foreach(level_keyboard_current(priv->keyboard),
create_keyboard_surface_row_callback,
&data);
cairo_restore (data.cr);
cairo_destroy (data.cr);
}
static void
render_outline (cairo_t *cr,
GtkStyleContext *ctx,
EekBounds bounds)
{
GtkBorder margin, border;
gtk_style_context_get_margin(ctx, GTK_STATE_FLAG_NORMAL, &margin);
gtk_style_context_get_border(ctx, GTK_STATE_FLAG_NORMAL, &border);
gdouble x = margin.left + border.left;
gdouble y = margin.top + border.top;
EekBounds position = {
.x = x,
.y = y,
.width = bounds.width - x - (margin.right + border.right),
.height = bounds.height - y - (margin.bottom + border.bottom),
};
gtk_render_background (ctx, cr,
position.x, position.y, position.width, position.height);
gtk_render_frame (ctx, cr,
position.x, position.y, position.width, position.height);
}
static void render_button_in_context(EekRenderer *self,
gdouble scale,
gint scale_factor,
cairo_t *cr,
GtkStyleContext *ctx,
EekBounds view_bounds,
struct button_place *place,
gboolean active) {
cairo_surface_t *outline_surface = NULL;
PangoLayout *layout;
PangoRectangle extents = { 0, };
EekColor foreground;
/* render outline */
EekBounds bounds = squeek_button_get_bounds(place->button);
{
cairo_t *cr;
// Outline will be drawn on the outside of the button, so the
// surface needs to be bigger than the button
outline_surface =
cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
(int)ceil(bounds.width) + 10,
(int)ceil(bounds.height) + 10);
cr = cairo_create (outline_surface);
/* blank background */
cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.0);
cairo_paint (cr);
cairo_save (cr);
eek_renderer_apply_transformation_for_button (cr, view_bounds, place, 1.0, FALSE);
render_outline (cr, ctx, bounds);
cairo_restore (cr);
cairo_destroy (cr);
}
cairo_set_source_surface (cr, outline_surface, 0.0, 0.0);
cairo_surface_destroy(outline_surface);
cairo_paint (cr);
eek_renderer_get_foreground_color (ctx, &foreground);
/* render icon (if any) */
const char *icon_name = squeek_button_get_icon_name(place->button);
if (icon_name) {
cairo_surface_t *icon_surface =
eek_renderer_get_icon_surface (icon_name, 16, scale_factor);
if (icon_surface) {
gint width = cairo_image_surface_get_width (icon_surface);
gint height = cairo_image_surface_get_height (icon_surface);
cairo_save (cr);
cairo_translate (cr,
(bounds.width - (double)width / scale_factor) / 2,
(bounds.height - (double)height / scale_factor) / 2);
cairo_rectangle (cr, 0, 0, width, height);
cairo_clip (cr);
/* Draw the shape of the icon using the foreground color */
cairo_set_source_rgba (cr, foreground.red,
foreground.green,
foreground.blue,
foreground.alpha);
cairo_mask_surface (cr, icon_surface, 0.0, 0.0);
cairo_surface_destroy(icon_surface);
cairo_fill (cr);
cairo_restore (cr);
return;
}
}
/* render label */
layout = pango_cairo_create_layout (cr);
eek_renderer_real_render_button_label (self, layout, place->button);
pango_layout_get_extents (layout, NULL, &extents);
cairo_save (cr);
cairo_move_to
(cr,
(bounds.width - (double)extents.width / PANGO_SCALE) / 2,
(bounds.height - (double)extents.height / PANGO_SCALE) / 2);
cairo_set_source_rgba (cr,
foreground.red,
foreground.green,
foreground.blue,
foreground.alpha);
pango_cairo_show_layout (cr, layout);
cairo_restore (cr);
g_object_unref (layout);
}
static void
render_button (EekRenderer *self,
cairo_t *cr,
EekBounds view_bounds,
struct button_place *place,
gboolean pressed,
gboolean locked)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (self);
GtkStyleContext *ctx = priv->button_context;
/* Set the name of the button on the widget path, using the name obtained
from the button's symbol. */
g_autoptr (GtkWidgetPath) path = NULL;
path = gtk_widget_path_copy (gtk_style_context_get_path (ctx));
const char *name = squeek_button_get_name(place->button);
gtk_widget_path_iter_set_name (path, -1, name);
/* Update the style context with the updated widget path. */
gtk_style_context_set_path (ctx, path);
/* Set the state to take into account whether the button is active
(pressed) or normal. */
gtk_style_context_set_state(ctx,
pressed ? GTK_STATE_FLAG_ACTIVE : GTK_STATE_FLAG_NORMAL);
const char *outline_name = squeek_button_get_outline_name(place->button);
if (locked) {
gtk_style_context_add_class(ctx, "locked");
}
gtk_style_context_add_class(ctx, outline_name);
render_button_in_context(self, priv->scale, priv->scale_factor, cr, ctx, view_bounds, place, pressed);
// Save and restore functions don't work if gtk_render_* was used in between
gtk_style_context_set_state(ctx, GTK_STATE_FLAG_NORMAL);
gtk_style_context_remove_class(ctx, outline_name);
if (locked) {
gtk_style_context_remove_class(ctx, "locked");
}
}
/**
* eek_renderer_apply_transformation_for_key:
* @self: The renderer used to render the key
* @cr: The Cairo rendering context used for rendering
* @key: The key to be transformed
* @scale: The factor used to scale the key bounds before rendering
* @rotate: Whether to rotate the key by the angle defined for the key's
* in its section definition
*
* Applies a transformation, consisting of scaling and rotation, to the
* current rendering context using the bounds for the given key. The scale
* factor is separate to the normal scale factor for the keyboard as a whole
* and is applied cumulatively. It is typically used to render larger than
* normal keys for popups.
*/
void
eek_renderer_apply_transformation_for_button (cairo_t *cr,
EekBounds view_bounds,
struct button_place *place,
gdouble scale,
gboolean rotate)
{
EekBounds bounds, rotated_bounds;
gdouble s;
eek_renderer_get_button_bounds (view_bounds, place, &bounds, FALSE);
eek_renderer_get_button_bounds (view_bounds, place, &rotated_bounds, TRUE);
gint angle = squeek_row_get_angle (place->row);
cairo_scale (cr, scale, scale);
if (rotate) {
s = sin (angle * G_PI / 180);
if (s < 0)
cairo_translate (cr, 0, - bounds.width * s);
else
cairo_translate (cr, bounds.height * s, 0);
cairo_rotate (cr, angle * G_PI / 180);
}
}
static void
eek_renderer_real_render_button_label (EekRenderer *self,
PangoLayout *layout,
const struct squeek_button *button)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (self);
const gchar *label = squeek_button_get_label(button);
if (!label) {
return;
}
PangoFontDescription *font;
gdouble scale;
if (!priv->font) {
const PangoFontDescription *base_font;
gdouble ascii_size, size;
base_font = pango_context_get_font_description (priv->pcontext);
// FIXME: Base font size on the same size unit used for button sizing,
// and make the default about 1/3 of the current row height
ascii_size = 30000.0;
priv->ascii_font = pango_font_description_copy (base_font);
pango_font_description_set_size (priv->ascii_font,
(gint)round(ascii_size));
size = 30000.0;
priv->font = pango_font_description_copy (base_font);
pango_font_description_set_size (priv->font, (gint)round(size * 0.6));
}
EekBounds bounds = squeek_button_get_bounds(button);
scale = MIN((bounds.width - priv->border_width) / bounds.width,
(bounds.height - priv->border_width) / bounds.height);
font = pango_font_description_copy (priv->font);
pango_font_description_set_size (font,
(gint)round(pango_font_description_get_size (font) * scale));
pango_layout_set_font_description (layout, font);
pango_font_description_free (font);
pango_layout_set_text (layout, label, -1);
PangoLayoutLine *line = pango_layout_get_line_readonly(layout, 0);
if (line->resolved_dir == PANGO_DIRECTION_RTL) {
pango_layout_set_alignment (layout, PANGO_ALIGN_RIGHT);
}
pango_layout_set_width (layout,
PANGO_SCALE * bounds.width * scale);
}
/*
* eek_renderer_real_render_key:
* @self: The renderer used to render the key
* @cr: The Cairo rendering context used for rendering
* @key: The key to be transformed
* @scale: The factor used to scale the key bounds before rendering
* @rotate: Whether to rotate the key by the angle defined for the key's
* in its section definition
*
* Renders a key separately from the normal keyboard rendering.
*/
static void
eek_renderer_real_render_button (EekRenderer *self,
cairo_t *cr,
struct button_place *place,
gdouble scale,
gboolean rotate)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (self);
EekBounds bounds;
EekBounds view_bounds = squeek_view_get_bounds (level_keyboard_current(priv->keyboard));
eek_renderer_get_button_bounds (view_bounds, place, &bounds, rotate);
cairo_save (cr);
/* Because this function is called separately from the keyboard rendering
function, the transformation for the context needs to be set up */
cairo_translate (cr, priv->origin_x, priv->origin_y);
cairo_scale (cr, priv->scale, priv->scale);
cairo_translate (cr, bounds.x, bounds.y);
eek_renderer_apply_transformation_for_button (cr, view_bounds, place, scale, rotate);
struct squeek_key *key = squeek_button_get_key(place->button);
render_button (
self, cr, view_bounds, place,
squeek_key_is_pressed(key) != 0,
squeek_key_is_locked (key) != 0
);
cairo_restore (cr);
}
static void
eek_renderer_real_render_keyboard (EekRenderer *self,
cairo_t *cr)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (self);
cairo_pattern_t *source;
g_return_if_fail (priv->keyboard);
g_return_if_fail (priv->allocation_width > 0.0);
g_return_if_fail (priv->allocation_height > 0.0);
cairo_save (cr);
cairo_translate (cr, priv->origin_x, priv->origin_y);
if (priv->keyboard_surface)
cairo_surface_destroy (priv->keyboard_surface);
priv->keyboard_surface = cairo_surface_create_for_rectangle (
cairo_get_target (cr), 0, 0,
priv->allocation_width, priv->allocation_height);
render_keyboard_surface (self, squeek_layout_get_current_view(priv->keyboard->layout));
cairo_set_source_surface (cr, priv->keyboard_surface, 0.0, 0.0);
source = cairo_get_source (cr);
cairo_pattern_set_extend (source, CAIRO_EXTEND_PAD);
cairo_paint (cr);
cairo_restore (cr);
}
static void
eek_renderer_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (
EEK_RENDERER(object));
switch (prop_id) {
case PROP_PCONTEXT:
priv->pcontext = g_value_get_object (value);
g_object_ref (priv->pcontext);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
eek_renderer_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
eek_renderer_dispose (GObject *object)
{
EekRenderer *self = EEK_RENDERER (object);
EekRendererPrivate *priv = eek_renderer_get_instance_private (self);
if (priv->keyboard) {
priv->keyboard = NULL;
}
if (priv->pcontext) {
g_object_unref (priv->pcontext);
priv->pcontext = NULL;
}
g_clear_pointer (&priv->icons, g_hash_table_destroy);
/* this will release all allocated surfaces and font if any */
invalidate (EEK_RENDERER(object));
G_OBJECT_CLASS (eek_renderer_parent_class)->dispose (object);
}
static void
eek_renderer_finalize (GObject *object)
{
EekRenderer *self = EEK_RENDERER(object);
EekRendererPrivate *priv = eek_renderer_get_instance_private (self);
g_hash_table_destroy (priv->outline_surface_cache);
g_hash_table_destroy (priv->active_outline_surface_cache);
pango_font_description_free (priv->ascii_font);
pango_font_description_free (priv->font);
G_OBJECT_CLASS (eek_renderer_parent_class)->finalize (object);
}
static void
eek_renderer_class_init (EekRendererClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GParamSpec *pspec;
klass->render_button = eek_renderer_real_render_button;
klass->render_keyboard = eek_renderer_real_render_keyboard;
gobject_class->set_property = eek_renderer_set_property;
gobject_class->get_property = eek_renderer_get_property;
gobject_class->dispose = eek_renderer_dispose;
gobject_class->finalize = eek_renderer_finalize;
pspec = g_param_spec_object ("pango-context",
"Pango Context",
"Pango Context",
PANGO_TYPE_CONTEXT,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE);
g_object_class_install_property (gobject_class,
PROP_PCONTEXT,
pspec);
}
static GType new_type(char *name) {
GTypeInfo info = {0};
info.class_size = sizeof(GtkWidgetClass);
info.instance_size = sizeof(GtkWidget);
return g_type_register_static(GTK_TYPE_WIDGET, name, &info,
G_TYPE_FLAG_ABSTRACT
);
}
static GType view_type() {
static GType type = 0;
if (!type) {
type = new_type("sq_view");
}
return type;
}
static GType button_type() {
static GType type = 0;
if (!type) {
type = new_type("sq_button");
}
return type;
}
static void
eek_renderer_init (EekRenderer *self)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (self);
priv->keyboard = NULL;
priv->pcontext = NULL;
priv->border_width = 1.0;
priv->allocation_width = 0.0;
priv->allocation_height = 0.0;
priv->scale = 1.0;
priv->scale_factor = 1;
priv->font = NULL;
priv->outline_surface_cache =
g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify)cairo_surface_destroy);
priv->active_outline_surface_cache =
g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify)cairo_surface_destroy);
priv->keyboard_surface = NULL;
GtkIconTheme *theme = gtk_icon_theme_get_default ();
gtk_icon_theme_add_resource_path (theme, "/sm/puri/squeekboard/icons");
priv->icons = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
(GDestroyNotify)cairo_surface_destroy);
/* Create a default CSS provider and load a style sheet */
priv->css_provider = gtk_css_provider_new ();
gtk_css_provider_load_from_resource (priv->css_provider,
"/sm/puri/squeekboard/style.css");
}
static void
invalidate (EekRenderer *renderer)
{
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
if (priv->outline_surface_cache)
g_hash_table_remove_all (priv->outline_surface_cache);
if (priv->active_outline_surface_cache)
g_hash_table_remove_all (priv->active_outline_surface_cache);
if (priv->keyboard_surface) {
cairo_surface_destroy (priv->keyboard_surface);
priv->keyboard_surface = NULL;
}
}
EekRenderer *
eek_renderer_new (LevelKeyboard *keyboard,
PangoContext *pcontext)
{
EekRenderer *renderer = g_object_new (EEK_TYPE_RENDERER,
"pango-context", pcontext,
NULL);
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
priv->keyboard = keyboard;
/* Create a style context for the layout */
GtkWidgetPath *path = gtk_widget_path_new();
gtk_widget_path_append_type(path, view_type());
priv->view_context = gtk_style_context_new();
gtk_style_context_set_path(priv->view_context, path);
gtk_widget_path_unref(path);
if (squeek_layout_get_kind(priv->keyboard->layout) == ARRANGEMENT_KIND_WIDE) {
gtk_style_context_add_class(priv->view_context, "wide");
}
gtk_style_context_add_provider (priv->view_context,
GTK_STYLE_PROVIDER(priv->css_provider),
GTK_STYLE_PROVIDER_PRIORITY_USER);
printf("view: %s\n", gtk_style_context_to_string(priv->view_context, GTK_STYLE_CONTEXT_PRINT_SHOW_STYLE));
/* Create a style context for the buttons */
path = gtk_widget_path_new();
gtk_widget_path_append_type(path, view_type());
if (squeek_layout_get_kind(priv->keyboard->layout) == ARRANGEMENT_KIND_WIDE) {
gtk_widget_path_iter_add_class(path, -1, "wide");
}
gtk_widget_path_append_type(path, button_type());
priv->button_context = gtk_style_context_new ();
gtk_style_context_set_path(priv->button_context, path);
gtk_widget_path_unref(path);
gtk_style_context_set_parent(priv->button_context, priv->view_context);
gtk_style_context_set_state (priv->button_context, GTK_STATE_FLAG_NORMAL);
gtk_style_context_add_provider (priv->button_context,
GTK_STYLE_PROVIDER(priv->css_provider),
GTK_STYLE_PROVIDER_PRIORITY_USER);
return renderer;
}
void
eek_renderer_set_allocation_size (EekRenderer *renderer,
gdouble width,
gdouble height)
{
gdouble scale;
g_return_if_fail (EEK_IS_RENDERER(renderer));
g_return_if_fail (width > 0.0 && height > 0.0);
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
priv->allocation_width = width;
priv->allocation_height = height;
/* Calculate a scale factor to use when rendering the keyboard into the
available space. */
EekBounds bounds = squeek_view_get_bounds (level_keyboard_current(priv->keyboard));
gdouble w = (bounds.x * 2) + bounds.width;
gdouble h = (bounds.y * 2) + bounds.height;
scale = MIN(width / w, height / h);
priv->scale = scale;
/* Set the rendering offset in widget coordinates to center the keyboard */
priv->origin_x = (gint)floor((width - (scale * w)) / 2);
priv->origin_y = (gint)floor((height - (scale * h)) / 2);
invalidate (renderer);
}
void
eek_renderer_get_size (EekRenderer *renderer,
gdouble *width,
gdouble *height)
{
g_return_if_fail (EEK_IS_RENDERER(renderer));
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
EekBounds bounds = squeek_view_get_bounds (level_keyboard_current(priv->keyboard));
if (width)
*width = bounds.width;
if (height)
*height = bounds.height;
}
void
eek_renderer_get_button_bounds (EekBounds view_bounds,
struct button_place *place,
EekBounds *bounds,
gboolean rotate)
{
gint angle = 0;
EekPoint points[4], min, max;
g_return_if_fail (place);
g_return_if_fail (bounds != NULL);
EekBounds button_bounds = squeek_button_get_bounds(place->button);
EekBounds row_bounds = squeek_row_get_bounds (place->row);
if (!rotate) {
button_bounds.x += view_bounds.x + row_bounds.x;
button_bounds.y += view_bounds.y + row_bounds.y;
*bounds = button_bounds;
return;
}
points[0].x = button_bounds.x;
points[0].y = button_bounds.y;
points[1].x = points[0].x + button_bounds.width;
points[1].y = points[0].y;
points[2].x = points[1].x;
points[2].y = points[1].y + button_bounds.height;
points[3].x = points[0].x;
points[3].y = points[2].y;
if (rotate) {
angle = squeek_row_get_angle (place->row);
}
min = points[2];
max = points[0];
for (unsigned i = 0; i < G_N_ELEMENTS(points); i++) {
eek_point_rotate (&points[i], angle);
if (points[i].x < min.x)
min.x = points[i].x;
if (points[i].x > max.x)
max.x = points[i].x;
if (points[i].y < min.y)
min.y = points[i].y;
if (points[i].y > max.y)
max.y = points[i].y;
}
bounds->x = view_bounds.x + row_bounds.x + min.x;
bounds->y = view_bounds.y + row_bounds.y + min.y;
bounds->width = (max.x - min.x);
bounds->height = (max.y - min.y);
}
gdouble
eek_renderer_get_scale (EekRenderer *renderer)
{
g_return_val_if_fail (EEK_IS_RENDERER(renderer), 0);
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
return priv->scale;
}
void
eek_renderer_set_scale_factor (EekRenderer *renderer, gint scale)
{
g_return_if_fail (EEK_IS_RENDERER(renderer));
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
priv->scale_factor = scale;
}
PangoLayout *
eek_renderer_create_pango_layout (EekRenderer *renderer)
{
g_return_val_if_fail (EEK_IS_RENDERER(renderer), NULL);
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
return pango_layout_new (priv->pcontext);
}
cairo_surface_t *
eek_renderer_get_icon_surface (const gchar *icon_name,
gint size,
gint scale)
{
GError *error = NULL;
cairo_surface_t *surface = gtk_icon_theme_load_surface (gtk_icon_theme_get_default (),
icon_name,
size,
scale,
NULL,
0,
&error);
if (surface == NULL) {
g_warning ("can't get icon surface for %s: %s",
icon_name,
error->message);
g_error_free (error);
return NULL;
}
return surface;
}
void
eek_renderer_render_button (EekRenderer *renderer,
cairo_t *cr,
struct button_place *place,
gdouble scale,
gboolean rotate)
{
g_return_if_fail (EEK_IS_RENDERER(renderer));
g_return_if_fail (place);
g_return_if_fail (scale >= 0.0);
EEK_RENDERER_GET_CLASS(renderer)->
render_button (renderer, cr, place, scale, rotate);
}
void
eek_renderer_render_keyboard (EekRenderer *renderer,
cairo_t *cr)
{
g_return_if_fail (EEK_IS_RENDERER(renderer));
EEK_RENDERER_GET_CLASS(renderer)->render_keyboard (renderer, cr);
}
void
eek_renderer_get_foreground_color (GtkStyleContext *context,
EekColor *color)
{
g_return_if_fail (color);
GtkStateFlags flags = GTK_STATE_FLAG_NORMAL;
GdkRGBA gcolor;
gtk_style_context_get_color (context, flags, &gcolor);
color->red = gcolor.red;
color->green = gcolor.green;
color->blue = gcolor.blue;
color->alpha = gcolor.alpha;
}
static gboolean
sign (EekPoint *p1, EekPoint *p2, EekPoint *p3)
{
// FIXME: what is this actually checking?
return (p1->x - p3->x) * (p2->y - p3->y) -
(p2->x - p3->x) * (p1->y - p3->y);
}
uint32_t
eek_are_bounds_inside (EekBounds bounds, EekPoint point, EekPoint origin, int32_t angle)
{
EekPoint points[4];
gboolean b1, b2, b3;
points[0].x = bounds.x;
points[0].y = bounds.y;
points[1].x = points[0].x + bounds.width;
points[1].y = points[0].y;
points[2].x = points[1].x;
points[2].y = points[1].y + bounds.height;
points[3].x = points[0].x;
points[3].y = points[2].y;
for (unsigned i = 0; i < G_N_ELEMENTS(points); i++) {
eek_point_rotate (&points[i], angle);
points[i].x += origin.x;
points[i].y += origin.y;
}
b1 = sign (&point, &points[0], &points[1]) < 0.0;
b2 = sign (&point, &points[1], &points[2]) < 0.0;
b3 = sign (&point, &points[2], &points[0]) < 0.0;
if (b1 == b2 && b2 == b3) {
return 1;
}
b1 = sign (&point, &points[2], &points[3]) < 0.0;
b2 = sign (&point, &points[3], &points[0]) < 0.0;
b3 = sign (&point, &points[0], &points[2]) < 0.0;
if (b1 == b2 && b2 == b3) {
return 1;
}
return 0;
}
struct transformation
eek_renderer_get_transformation (EekRenderer *renderer) {
struct transformation failed = {0};
g_return_val_if_fail (EEK_IS_RENDERER(renderer), failed);
EekRendererPrivate *priv = eek_renderer_get_instance_private (renderer);
struct transformation ret = {
.origin_x = priv->origin_x,
.origin_y = priv->origin_y,
.scale = priv->scale,
};
return ret;
}
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