forked from AuroraMiddleware/gtk
gtktexthandle: Update to gtk4 rendering/input
GtkTextHandle was neglected by whoever removed the ::draw signal, leaving it entirely broken. Update to using GtkGizmo so we can implement snapshot of text handles. Input has received a revamp too, handling is done through a GtkGestureDrag and coordinate calculations simplified by storing the delta to the hotspot on ::begin instead of ::update, as this value is constant throughout the gesture. Widget state management on crossing events happens implicitly, so no longer needs to be done here. Last but not least, CSS has also been updated so handles are rendered at the correct size and proportion, and with the padding that code expects of it.
This commit is contained in:
Carlos Garnacho
parent
ffd89d29df
commit
b3e91b7111
@ -23,6 +23,8 @@
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#include "gtkwindowprivate.h"
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#include "gtkcssnodeprivate.h"
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#include "gtkwidgetprivate.h"
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#include "gtkgizmoprivate.h"
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#include "gtkrendericonprivate.h"
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#include "gtkintl.h"
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#include <gtk/gtk.h>
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@ -93,30 +95,6 @@ _gtk_text_handle_get_size (GtkTextHandle *handle,
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NULL);
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}
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static void
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_gtk_text_handle_draw (GtkTextHandle *handle,
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cairo_t *cr,
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GtkTextHandlePosition pos)
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{
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GtkTextHandlePrivate *priv;
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HandleWindow *handle_window;
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GtkStyleContext *context;
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gint width, height;
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priv = handle->priv;
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handle_window = &priv->windows[pos];
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context = gtk_widget_get_style_context (handle_window->widget);
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_gtk_text_handle_get_size (handle, pos, &width, &height);
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cairo_save (cr);
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cairo_translate (cr, handle_window->border.left, handle_window->border.top);
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gtk_render_handle (context, cr, 0, 0, width, height);
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cairo_restore (cr);
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}
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static gint
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_text_handle_pos_from_widget (GtkTextHandle *handle,
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GtkWidget *widget)
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@ -131,28 +109,6 @@ _text_handle_pos_from_widget (GtkTextHandle *handle,
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return -1;
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}
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static gboolean
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gtk_text_handle_widget_draw (GtkWidget *widget,
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cairo_t *cr,
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GtkTextHandle *handle)
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{
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gint pos;
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pos = _text_handle_pos_from_widget (handle, widget);
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if (pos < 0)
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return FALSE;
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#if 0
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/* Show the invisible border */
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cairo_set_source_rgba (cr, 1, 0, 0, 0.5);
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cairo_paint (cr);
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#endif
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_gtk_text_handle_draw (handle, cr, pos);
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return TRUE;
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}
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static void
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gtk_text_handle_set_state (GtkTextHandle *handle,
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gint pos,
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@ -181,101 +137,86 @@ gtk_text_handle_unset_state (GtkTextHandle *handle,
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gtk_widget_queue_draw (priv->windows[pos].widget);
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}
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static gboolean
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gtk_text_handle_widget_event (GtkWidget *widget,
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GdkEvent *event,
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GtkTextHandle *handle)
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static void
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handle_drag_begin (GtkGestureDrag *gesture,
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gdouble x,
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gdouble y,
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GtkTextHandle *handle)
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{
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GtkTextHandlePrivate *priv;
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GdkEventType event_type;
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gdouble event_x, event_y;
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guint state;
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GtkTextHandlePrivate *priv = handle->priv;
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GtkWidget *widget;
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gint pos;
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GdkCrossingMode mode;
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priv = handle->priv;
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widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
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pos = _text_handle_pos_from_widget (handle, widget);
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if (pos < 0)
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return FALSE;
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if (pos == GTK_TEXT_HANDLE_POSITION_CURSOR &&
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priv->mode == GTK_TEXT_HANDLE_MODE_CURSOR)
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x -= gtk_widget_get_width (widget) / 2;
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else if ((pos == GTK_TEXT_HANDLE_POSITION_CURSOR &&
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priv->windows[pos].dir == GTK_TEXT_DIR_RTL) ||
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(pos == GTK_TEXT_HANDLE_POSITION_SELECTION_START &&
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priv->windows[pos].dir != GTK_TEXT_DIR_RTL))
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x -= gtk_widget_get_width (widget);
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event_type = gdk_event_get_event_type (event);
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gdk_event_get_coords (event, &event_x, &event_y);
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gdk_event_get_crossing_mode (event, &mode);
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y += priv->windows[pos].border.top / 2;
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if (event_type == GDK_BUTTON_PRESS)
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{
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priv->windows[pos].dx = event_x;
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priv->windows[pos].dy = event_y;
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priv->windows[pos].dragged = TRUE;
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gtk_text_handle_set_state (handle, pos, GTK_STATE_FLAG_ACTIVE);
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g_signal_emit (handle, signals[DRAG_STARTED], 0, pos);
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}
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else if (event_type == GDK_BUTTON_RELEASE)
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{
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g_signal_emit (handle, signals[DRAG_FINISHED], 0, pos);
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priv->windows[pos].dragged = FALSE;
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gtk_text_handle_unset_state (handle, pos, GTK_STATE_FLAG_ACTIVE);
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}
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else if (event_type == GDK_ENTER_NOTIFY)
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gtk_text_handle_set_state (handle, pos, GTK_STATE_FLAG_PRELIGHT);
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else if (event_type == GDK_LEAVE_NOTIFY)
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{
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if (!priv->windows[pos].dragged &&
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(mode == GDK_CROSSING_NORMAL ||
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mode == GDK_CROSSING_UNGRAB))
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gtk_text_handle_unset_state (handle, pos, GTK_STATE_FLAG_PRELIGHT);
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}
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else if (event_type == GDK_MOTION_NOTIFY &&
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gdk_event_get_state (event, &state) &&
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state & GDK_BUTTON1_MASK &&
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priv->windows[pos].dragged)
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{
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gint x, y, handle_width, handle_height;
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cairo_rectangle_int_t rect;
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GtkAllocation allocation;
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GtkWidget *window;
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window = gtk_widget_get_parent (priv->windows[pos].widget);
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gtk_widget_get_allocation (priv->windows[pos].widget, &allocation);
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_gtk_text_handle_get_size (handle, pos, &handle_width, &handle_height);
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_gtk_window_get_popover_position (GTK_WINDOW (window),
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priv->windows[pos].widget,
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NULL, &rect);
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x = rect.x + event_x - priv->windows[pos].dx;
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y = rect.y + event_y - priv->windows[pos].dy +
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priv->windows[pos].border.top / 2;
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if (pos == GTK_TEXT_HANDLE_POSITION_CURSOR &&
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priv->mode == GTK_TEXT_HANDLE_MODE_CURSOR)
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x += handle_width / 2;
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else if ((pos == GTK_TEXT_HANDLE_POSITION_CURSOR &&
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priv->windows[pos].dir == GTK_TEXT_DIR_RTL) ||
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(pos == GTK_TEXT_HANDLE_POSITION_SELECTION_START &&
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priv->windows[pos].dir != GTK_TEXT_DIR_RTL))
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x += handle_width;
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gtk_widget_translate_coordinates (window, priv->parent, x, y, &x, &y);
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g_signal_emit (handle, signals[HANDLE_DRAGGED], 0, pos, x, y);
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}
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return TRUE;
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priv->windows[pos].dx = x;
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priv->windows[pos].dy = y;
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priv->windows[pos].dragged = TRUE;
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gtk_text_handle_set_state (handle, pos, GTK_STATE_FLAG_ACTIVE);
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g_signal_emit (handle, signals[DRAG_STARTED], 0, pos);
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}
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static void
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gtk_text_handle_widget_style_updated (GtkWidget *widget,
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GtkTextHandle *handle)
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handle_drag_update (GtkGestureDrag *gesture,
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gdouble offset_x,
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gdouble offset_y,
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GtkTextHandle *handle)
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{
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GtkTextHandlePrivate *priv;
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GtkTextHandlePrivate *priv = handle->priv;
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gdouble start_x, start_y;
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gint pos, x, y;
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priv = handle->priv;
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gtk_style_context_set_parent (gtk_widget_get_style_context (widget),
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gtk_widget_get_style_context (priv->parent));
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pos = _text_handle_pos_from_widget (handle,
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gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture)));
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gtk_gesture_drag_get_start_point (gesture, &start_x, &start_y);
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_gtk_text_handle_update (handle, GTK_TEXT_HANDLE_POSITION_SELECTION_START);
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_gtk_text_handle_update (handle, GTK_TEXT_HANDLE_POSITION_SELECTION_END);
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gtk_widget_translate_coordinates (priv->windows[pos].widget, priv->parent,
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start_x + offset_x - priv->windows[pos].dx,
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start_y + offset_y - priv->windows[pos].dy,
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&x, &y);
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g_signal_emit (handle, signals[HANDLE_DRAGGED], 0, pos, x, y);
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}
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static void
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handle_drag_end (GtkGestureDrag *gesture,
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gdouble offset_x,
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gdouble offset_y,
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GtkTextHandle *handle)
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{
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GtkTextHandlePrivate *priv = handle->priv;
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gint pos;
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pos = _text_handle_pos_from_widget (handle,
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gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture)));
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g_signal_emit (handle, signals[DRAG_FINISHED], 0, pos);
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priv->windows[pos].dragged = FALSE;
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gtk_text_handle_unset_state (handle, pos, GTK_STATE_FLAG_ACTIVE);
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}
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static gboolean
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snapshot_func (GtkGizmo *gizmo,
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GtkSnapshot *snapshot)
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{
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GtkCssStyle *style = gtk_css_node_get_style (gtk_widget_get_css_node (GTK_WIDGET (gizmo)));
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gtk_css_style_snapshot_icon (style,
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snapshot,
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gtk_widget_get_width (GTK_WIDGET (gizmo)),
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gtk_widget_get_height (GTK_WIDGET (gizmo)),
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GTK_CSS_IMAGE_BUILTIN_HANDLE);
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return TRUE;
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}
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static GtkWidget *
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@ -290,18 +231,21 @@ _gtk_text_handle_ensure_widget (GtkTextHandle *handle,
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{
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GtkWidget *widget, *window;
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GtkStyleContext *context;
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GtkEventController *controller;
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widget = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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widget = gtk_gizmo_new (I_("cursor-handle"),
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NULL, NULL, snapshot_func);
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gtk_widget_set_direction (widget, priv->windows[pos].dir);
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g_signal_connect (widget, "draw",
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G_CALLBACK (gtk_text_handle_widget_draw), handle);
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g_signal_connect (widget, "event",
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G_CALLBACK (gtk_text_handle_widget_event), handle);
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g_signal_connect (widget, "style-updated",
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G_CALLBACK (gtk_text_handle_widget_style_updated),
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handle);
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controller = GTK_EVENT_CONTROLLER (gtk_gesture_drag_new ());
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g_signal_connect (controller, "drag-begin",
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G_CALLBACK (handle_drag_begin), handle);
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g_signal_connect (controller, "drag-update",
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G_CALLBACK (handle_drag_update), handle);
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g_signal_connect (controller, "drag-end",
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G_CALLBACK (handle_drag_end), handle);
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gtk_widget_add_controller (widget, controller);
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priv->windows[pos].widget = g_object_ref_sink (widget);
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window = gtk_widget_get_ancestor (priv->parent, GTK_TYPE_WINDOW);
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@ -309,7 +253,6 @@ _gtk_text_handle_ensure_widget (GtkTextHandle *handle,
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context = gtk_widget_get_style_context (widget);
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gtk_style_context_set_parent (context, gtk_widget_get_style_context (priv->parent));
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gtk_css_node_set_name (gtk_widget_get_css_node (widget), I_("cursor-handle"));
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if (pos == GTK_TEXT_HANDLE_POSITION_SELECTION_END)
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{
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gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM);
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@ -4420,6 +4420,12 @@ cursor-handle {
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background-image: none;
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box-shadow: none;
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border-style: none;
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min-width: 20px;
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min-height: 24px;
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padding-left: 20px;
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padding-right: 20px;
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padding-top: 24px;
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padding-bottom: 24px;
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@each $s,$as in ('',''),
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(':hover','-hover'),
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@ -4428,14 +4434,12 @@ cursor-handle {
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$_url: 'assets/text-select-start#{$as}#{$asset_suffix}';
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-gtk-icon-source: -gtk-scaled(url('#{$_url}.png'),
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url('#{$_url}@2.png'));
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padding-left: 10px;
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}
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&.bottom#{$s}:dir(ltr), &.top#{$s}:dir(rtl) {
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$_url: 'assets/text-select-end#{$as}#{$asset_suffix}';
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-gtk-icon-source: -gtk-scaled(url('#{$_url}.png'),
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url('#{$_url}@2.png'));
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padding-right: 10px;
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}
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&.insertion-cursor#{$s}:dir(ltr), &.insertion-cursor#{$s}:dir(rtl) {
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