341 lines
11 KiB
C
341 lines
11 KiB
C
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/* ide-completion-overlay.c
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*
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* Copyright 2018-2019 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#define G_LOG_DOMAIN "ide-completion-overlay"
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#include "config.h"
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#include "ide-completion-display.h"
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#include "ide-completion-overlay.h"
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#include "ide-completion-private.h"
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#include "ide-completion-proposal.h"
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#include "ide-completion-provider.h"
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#include "ide-completion-view.h"
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struct _IdeCompletionOverlay
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{
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DzlBin parent_instance;
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IdeCompletionView *view;
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};
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enum {
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PROP_0,
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PROP_CONTEXT,
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N_PROPS
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};
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static void completion_display_iface_init (IdeCompletionDisplayInterface *);
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G_DEFINE_FINAL_TYPE_WITH_CODE (IdeCompletionOverlay, ide_completion_overlay, GTK_TYPE_BIN,
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G_IMPLEMENT_INTERFACE (IDE_TYPE_COMPLETION_DISPLAY,
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completion_display_iface_init))
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static GParamSpec *properties [N_PROPS];
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static void
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ide_completion_overlay_show (GtkWidget *widget)
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{
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gtk_widget_set_opacity (widget, 1.0);
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GTK_WIDGET_CLASS (ide_completion_overlay_parent_class)->show (widget);
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}
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static void
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ide_completion_overlay_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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IdeCompletionOverlay *self = IDE_COMPLETION_OVERLAY (object);
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switch (prop_id)
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{
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case PROP_CONTEXT:
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g_value_set_object (value, ide_completion_view_get_context (self->view));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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ide_completion_overlay_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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IdeCompletionOverlay *self = IDE_COMPLETION_OVERLAY (object);
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switch (prop_id)
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{
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case PROP_CONTEXT:
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ide_completion_view_set_context (self->view, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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ide_completion_overlay_class_init (IdeCompletionOverlayClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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object_class->get_property = ide_completion_overlay_get_property;
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object_class->set_property = ide_completion_overlay_set_property;
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widget_class->show = ide_completion_overlay_show;
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properties [PROP_CONTEXT] =
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g_param_spec_object ("context",
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"Context",
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"The context to be displayed",
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IDE_TYPE_COMPLETION_CONTEXT,
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G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (object_class, N_PROPS, properties);
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gtk_widget_class_set_css_name (widget_class, "completionoverlay");
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gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/libide-sourceview/ui/ide-completion-overlay.ui");
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gtk_widget_class_bind_template_child (widget_class, IdeCompletionOverlay, view);
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g_type_ensure (IDE_TYPE_COMPLETION_VIEW);
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}
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static void
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ide_completion_overlay_init (IdeCompletionOverlay *self)
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{
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gtk_widget_init_template (GTK_WIDGET (self));
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gtk_widget_set_can_focus (GTK_WIDGET (self), FALSE);
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g_signal_connect_swapped (self->view,
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"reposition",
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G_CALLBACK (gtk_widget_queue_resize),
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self);
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}
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IdeCompletionOverlay *
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_ide_completion_overlay_new (void)
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{
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return g_object_new (IDE_TYPE_COMPLETION_OVERLAY, NULL);
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}
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static gboolean
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ide_completion_overlay_get_child_position_cb (IdeCompletionOverlay *self,
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GtkWidget *widget,
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GdkRectangle *out_rect,
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GtkOverlay *overlay)
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{
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IdeCompletionContext *context;
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GtkStyleContext *style_context;
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GdkRectangle begin_rect, end_rect, rect;
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GtkTextIter begin, end;
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GtkBorder border;
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GtkAllocation alloc;
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GtkStateFlags flags;
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GtkRequisition min, nat;
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GtkTextView *view;
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gint x_offset = 0;
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g_return_val_if_fail (IDE_IS_COMPLETION_OVERLAY (self), FALSE);
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g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
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g_return_val_if_fail (GTK_IS_OVERLAY (overlay), FALSE);
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g_return_val_if_fail (out_rect != NULL, FALSE);
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if (widget != GTK_WIDGET (self))
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return FALSE;
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if (!(context = ide_completion_view_get_context (self->view)))
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return FALSE;
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gtk_widget_get_allocation (GTK_WIDGET (overlay), &alloc);
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view = ide_completion_context_get_view (context);
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gtk_widget_get_preferred_size (widget, &min, &nat);
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ide_completion_context_get_bounds (context, &begin, &end);
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gtk_text_view_get_iter_location (view, &begin, &begin_rect);
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gtk_text_view_get_iter_location (view, &end, &end_rect);
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gtk_text_view_buffer_to_window_coords (view,
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GTK_TEXT_WINDOW_WIDGET,
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begin_rect.x, begin_rect.y,
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&begin_rect.x, &begin_rect.y);
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gtk_text_view_buffer_to_window_coords (view,
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GTK_TEXT_WINDOW_WIDGET,
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end_rect.x, end_rect.y,
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&end_rect.x, &end_rect.y);
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gdk_rectangle_union (&begin_rect, &end_rect, &rect);
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gtk_widget_translate_coordinates (GTK_WIDGET (view), GTK_WIDGET (overlay),
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rect.x, rect.y,
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&rect.x, &rect.y);
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style_context = gtk_widget_get_style_context (GTK_WIDGET (self->view));
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flags = gtk_style_context_get_state (style_context);
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gtk_style_context_get_margin (style_context, flags, &border);
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x_offset = _ide_completion_view_get_x_offset (self->view);
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/* TODO: Figure out where 11 is coming from */
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#define EXTRA_SHIFT 11
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x_offset -= EXTRA_SHIFT;
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out_rect->x = rect.x - x_offset - border.left;
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out_rect->y = rect.y + rect.height;
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out_rect->height = nat.height;
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out_rect->width = nat.width;
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/*
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* If we can keep the position in place by using the minimum size (or
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* larger up to the overlay bounds), then prefer to do that before shifting.
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*/
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if (out_rect->x + out_rect->width > alloc.width)
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{
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if (out_rect->x + min.width <= alloc.width)
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out_rect->width = alloc.width - out_rect->x;
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else
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out_rect->width = alloc.width - min.width;
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}
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if (out_rect->x < 0)
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{
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out_rect->x = 0;
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if (out_rect->width > alloc.width)
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out_rect->width = alloc.width;
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}
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if (out_rect->y + out_rect->height > alloc.height)
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out_rect->y = rect.y - out_rect->height;
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#if 0
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g_print ("Position: %d,%d %dx%d\n",
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out_rect->x,
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out_rect->y,
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out_rect->width,
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out_rect->height);
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#endif
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return TRUE;
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}
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static void
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ide_completion_overlay_attach (IdeCompletionDisplay *display,
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GtkSourceView *view)
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{
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IdeCompletionOverlay *self = (IdeCompletionOverlay *)display;
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GtkOverlay *overlay = NULL;
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GtkWidget *widget = (GtkWidget *)view;
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g_assert (IDE_IS_COMPLETION_OVERLAY (self));
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g_assert (IDE_IS_SOURCE_VIEW (view));
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while ((widget = gtk_widget_get_ancestor (widget, GTK_TYPE_OVERLAY)))
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{
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overlay = GTK_OVERLAY (widget);
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widget = gtk_widget_get_parent (widget);
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}
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if (overlay == NULL)
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{
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g_critical ("IdeCompletion requires a GtkOverlay to attach the completion "
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"window due to resize restrictions in windowing systems");
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return;
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}
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gtk_overlay_add_overlay (overlay, GTK_WIDGET (self));
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g_signal_connect_object (overlay,
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"get-child-position",
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G_CALLBACK (ide_completion_overlay_get_child_position_cb),
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self,
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G_CONNECT_SWAPPED);
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}
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static void
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ide_completion_overlay_set_n_rows (IdeCompletionDisplay *display,
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guint n_rows)
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{
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g_assert (IDE_IS_COMPLETION_OVERLAY (display));
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g_assert (n_rows > 0);
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g_assert (n_rows <= 32);
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_ide_completion_view_set_n_rows (IDE_COMPLETION_OVERLAY (display)->view, n_rows);
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}
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static gboolean
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ide_completion_overlay_key_press_event (IdeCompletionDisplay *display,
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const GdkEventKey *event)
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{
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IdeCompletionOverlay *self = (IdeCompletionOverlay *)display;
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g_assert (IDE_IS_COMPLETION_OVERLAY (self));
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g_assert (event != NULL);
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return _ide_completion_view_handle_key_press (self->view, event);
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}
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static void
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ide_completion_overlay_set_context (IdeCompletionDisplay *display,
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IdeCompletionContext *context)
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{
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IdeCompletionOverlay *self = (IdeCompletionOverlay *)display;
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g_return_if_fail (IDE_IS_COMPLETION_OVERLAY (self));
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g_return_if_fail (!context || IDE_IS_COMPLETION_CONTEXT (context));
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ide_completion_view_set_context (self->view, context);
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g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CONTEXT]);
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}
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static void
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ide_completion_overlay_move_cursor (IdeCompletionDisplay *display,
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GtkMovementStep step,
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gint count)
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{
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g_assert (IDE_IS_COMPLETION_OVERLAY (display));
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_ide_completion_view_move_cursor (IDE_COMPLETION_OVERLAY (display)->view, step, count);
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}
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static void
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ide_completion_overlay_set_font_desc (IdeCompletionDisplay *display,
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const PangoFontDescription *font_desc)
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{
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g_assert (IDE_IS_COMPLETION_OVERLAY (display));
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_ide_completion_view_set_font_desc (IDE_COMPLETION_OVERLAY (display)->view, font_desc);
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}
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static void
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completion_display_iface_init (IdeCompletionDisplayInterface *iface)
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{
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iface->set_context = ide_completion_overlay_set_context;
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iface->attach = ide_completion_overlay_attach;
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iface->key_press_event = ide_completion_overlay_key_press_event;
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iface->set_n_rows = ide_completion_overlay_set_n_rows;
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iface->move_cursor = ide_completion_overlay_move_cursor;
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iface->set_font_desc = ide_completion_overlay_set_font_desc;
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}
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