--- /dev/null
+/*
+ * mini-preview.c
+ * Copyright (C) 2001-2009 Jim Evins <evins@snaught.com>.
+ *
+ * This file is part of gLabels.
+ *
+ * gLabels is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * gLabels 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with gLabels. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include "mini-preview.h"
+
+#include <math.h>
+#include <glib/gi18n.h>
+
+#include <libglabels.h>
+#include "cairo-label-path.h"
+#include "marshal.h"
+#include "color.h"
+#include "print.h"
+
+#include "debug.h"
+
+
+/*===========================================*/
+/* Private macros and constants. */
+/*===========================================*/
+
+#define MARGIN 2
+#define SHADOW_OFFSET 3
+
+#define ARROW_SCALE 0.35
+#define UP_FONT_FAMILY "Sans"
+#define UP_SCALE 0.15
+
+/*===========================================*/
+/* Private types */
+/*===========================================*/
+
+enum {
+ CLICKED,
+ PRESSED,
+ RELEASED,
+ LAST_SIGNAL
+};
+
+typedef struct {
+ gdouble x;
+ gdouble y;
+} LabelCenter;
+
+struct _glMiniPreviewPrivate {
+
+ GtkWidget *canvas;
+
+ lglTemplate *template;
+ gint labels_per_sheet;
+ LabelCenter *centers;
+
+ gint highlight_first;
+ gint highlight_last;
+
+ gboolean dragging;
+ gint first_i;
+ gint last_i;
+ gint prev_i;
+
+ gboolean draw_arrow_flag;
+ gboolean rotate_flag;
+
+ gboolean update_scheduled_flag;
+
+ glLabel *label;
+ gint page;
+ gint n_sheets;
+ gint n_copies;
+ gint first;
+ gint last;
+ gboolean collate_flag;
+ gboolean outline_flag;
+ gboolean reverse_flag;
+ gboolean crop_marks_flag;
+};
+
+
+/*===========================================*/
+/* Private globals */
+/*===========================================*/
+
+static gint mini_preview_signals[LAST_SIGNAL] = { 0 };
+
+
+/*===========================================*/
+/* Local function prototypes */
+/*===========================================*/
+
+static void gl_mini_preview_finalize (GObject *object);
+
+static void gl_mini_preview_construct (glMiniPreview *this,
+ gint height,
+ gint width);
+
+static gboolean button_press_event_cb (GtkWidget *widget,
+ GdkEventButton *event);
+static gboolean motion_notify_event_cb (GtkWidget *widget,
+ GdkEventMotion *event);
+static gboolean button_release_event_cb (GtkWidget *widget,
+ GdkEventButton *event);
+
+
+static gboolean draw_cb (GtkWidget *widget,
+ cairo_t *cr,
+ glMiniPreview *this);
+static void style_set_cb (GtkWidget *widget,
+ GtkStyle *previous_style,
+ glMiniPreview *this);
+
+static void redraw (glMiniPreview *this);
+static void draw (glMiniPreview *this,
+ cairo_t *cr);
+
+static void draw_shadow (glMiniPreview *this,
+ cairo_t *cr,
+ gdouble x,
+ gdouble y,
+ gdouble width,
+ gdouble height);
+static void draw_paper (glMiniPreview *this,
+ cairo_t *cr,
+ gdouble width,
+ gdouble height,
+ gdouble line_width);
+static void draw_labels (glMiniPreview *this,
+ cairo_t *cr,
+ lglTemplate *template,
+ gdouble line_width);
+static void draw_arrow (glMiniPreview *this,
+ cairo_t *cr);
+
+static void draw_rich_preview (glMiniPreview *this,
+ cairo_t *cr);
+
+
+static gint find_closest_label (glMiniPreview *this,
+ gdouble x,
+ gdouble y);
+
+static gdouble set_transform_and_get_scale (glMiniPreview *this,
+ cairo_t *cr);
+
+
+/****************************************************************************/
+/* Object infrastructure. */
+/****************************************************************************/
+G_DEFINE_TYPE (glMiniPreview, gl_mini_preview, GTK_TYPE_EVENT_BOX)
+
+
+/*****************************************************************************/
+/* Class Init Function. */
+/*****************************************************************************/
+static void
+gl_mini_preview_class_init (glMiniPreviewClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ gl_mini_preview_parent_class = g_type_class_peek_parent (class);
+
+ object_class->finalize = gl_mini_preview_finalize;
+
+ widget_class->button_press_event = button_press_event_cb;
+ widget_class->motion_notify_event = motion_notify_event_cb;
+ widget_class->button_release_event = button_release_event_cb;
+
+ mini_preview_signals[CLICKED] =
+ g_signal_new ("clicked",
+ G_OBJECT_CLASS_TYPE(object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glMiniPreviewClass, clicked),
+ NULL, NULL,
+ gl_marshal_VOID__INT,
+ G_TYPE_NONE, 1, G_TYPE_INT);
+
+ mini_preview_signals[PRESSED] =
+ g_signal_new ("pressed",
+ G_OBJECT_CLASS_TYPE(object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glMiniPreviewClass, pressed),
+ NULL, NULL,
+ gl_marshal_VOID__INT_INT,
+ G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);
+
+ mini_preview_signals[RELEASED] =
+ g_signal_new ("released",
+ G_OBJECT_CLASS_TYPE(object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (glMiniPreviewClass, released),
+ NULL, NULL,
+ gl_marshal_VOID__INT_INT,
+ G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*****************************************************************************/
+/* Object Instance Init Function. */
+/*****************************************************************************/
+static void
+gl_mini_preview_init (glMiniPreview *this)
+{
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ this->priv = g_new0 (glMiniPreviewPrivate, 1);
+
+ gtk_widget_add_events (GTK_WIDGET (this),
+ GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
+ GDK_POINTER_MOTION_MASK);
+
+ gtk_event_box_set_visible_window (GTK_EVENT_BOX (this), FALSE);
+
+ this->priv->canvas = gtk_drawing_area_new ();
+ gtk_widget_set_has_window(this->priv->canvas, FALSE);
+ gtk_container_add (GTK_CONTAINER (this), this->priv->canvas);
+
+ g_signal_connect (G_OBJECT (this->priv->canvas), "draw",
+ G_CALLBACK (draw_cb), this);
+ g_signal_connect (G_OBJECT (this->priv->canvas), "style-set",
+ G_CALLBACK (style_set_cb), this);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*****************************************************************************/
+/* Finalize Method. */
+/*****************************************************************************/
+static void
+gl_mini_preview_finalize (GObject *object)
+{
+ glMiniPreview *this = GL_MINI_PREVIEW (object);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GL_IS_MINI_PREVIEW (object));
+
+ if (this->priv->label)
+ {
+ g_object_unref (this->priv->label);
+ }
+ lgl_template_free (this->priv->template);
+ g_free (this->priv->centers);
+ g_free (this->priv);
+
+ G_OBJECT_CLASS (gl_mini_preview_parent_class)->finalize (object);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*****************************************************************************/
+/** New Object Generator. */
+/*****************************************************************************/
+GtkWidget *
+gl_mini_preview_new (gint height,
+ gint width)
+{
+ glMiniPreview *this;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ this = g_object_new (gl_mini_preview_get_type (), NULL);
+
+ gl_mini_preview_construct (this, height, width);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+
+ return GTK_WIDGET (this);
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Construct composite widget. */
+/*--------------------------------------------------------------------------*/
+static void
+gl_mini_preview_construct (glMiniPreview *this,
+ gint height,
+ gint width)
+{
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ gtk_widget_set_size_request (GTK_WIDGET (this->priv->canvas), width, height);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/****************************************************************************/
+/* Set template for mini-preview to determine geometry. */
+/****************************************************************************/
+void
+gl_mini_preview_set_by_name (glMiniPreview *this,
+ const gchar *name)
+{
+ lglTemplate *template;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ /* Fetch template */
+ template = lgl_db_lookup_template_from_name (name);
+
+ gl_mini_preview_set_template (this, template);
+
+ lgl_template_free (template);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/****************************************************************************/
+/* Set template for mini-preview to determine geometry. */
+/****************************************************************************/
+void
+gl_mini_preview_set_template (glMiniPreview *this,
+ const lglTemplate *template)
+{
+ const lglTemplateFrame *frame;
+ lglTemplateOrigin *origins;
+ gdouble w, h;
+ gint i;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ frame = (lglTemplateFrame *)template->frames->data;
+
+ /*
+ * Set template
+ */
+ lgl_template_free (this->priv->template);
+ this->priv->template = lgl_template_dup (template);
+
+ /*
+ * Set labels per sheet
+ */
+ this->priv->labels_per_sheet = lgl_template_frame_get_n_labels (frame);
+
+ /*
+ * Initialize centers
+ */
+ g_free (this->priv->centers);
+ this->priv->centers = g_new0 (LabelCenter, this->priv->labels_per_sheet);
+ origins = lgl_template_frame_get_origins (frame);
+ lgl_template_frame_get_size (frame, &w, &h);
+ for ( i=0; i<this->priv->labels_per_sheet; i++ )
+ {
+ this->priv->centers[i].x = origins[i].x + w/2.0;
+ this->priv->centers[i].y = origins[i].y + h/2.0;
+ }
+ g_free (origins);
+
+ /*
+ * Redraw modified preview
+ */
+ redraw (this);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/****************************************************************************/
+/* Highlight given label outlines. */
+/****************************************************************************/
+void
+gl_mini_preview_highlight_range (glMiniPreview *this,
+ gint first_label,
+ gint last_label)
+{
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ if ( (first_label != this->priv->highlight_first) ||
+ (last_label != this->priv->highlight_last) )
+ {
+
+ this->priv->highlight_first = first_label;
+ this->priv->highlight_last = last_label;
+
+ redraw (this);
+
+ }
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/****************************************************************************/
+/* Set draw arrow. */
+/****************************************************************************/
+void
+gl_mini_preview_set_draw_arrow (glMiniPreview *this,
+ gboolean draw_arrow_flag)
+{
+ if ( draw_arrow_flag != this->priv->draw_arrow_flag )
+ {
+ this->priv->draw_arrow_flag = draw_arrow_flag;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set rotate flag. */
+/****************************************************************************/
+void
+gl_mini_preview_set_rotate (glMiniPreview *this,
+ gboolean rotate_flag)
+{
+ if ( rotate_flag != this->priv->rotate_flag )
+ {
+ this->priv->rotate_flag = rotate_flag;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set label. */
+/****************************************************************************/
+void
+gl_mini_preview_set_label (glMiniPreview *this,
+ glLabel *label)
+{
+ if ( this->priv->label )
+ {
+ g_object_unref (this->priv->label);
+ }
+ this->priv->label = g_object_ref (label);
+ redraw (this);
+}
+
+
+/****************************************************************************/
+/* Set page number. */
+/****************************************************************************/
+void
+gl_mini_preview_set_page (glMiniPreview *this,
+ gint page)
+{
+ if ( page != this->priv->page )
+ {
+ this->priv->page = page;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set number of sheets. */
+/****************************************************************************/
+void
+gl_mini_preview_set_n_sheets (glMiniPreview *this,
+ gint n_sheets)
+{
+ if ( n_sheets != this->priv->n_sheets )
+ {
+ this->priv->n_sheets = n_sheets;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set number of copies (merge only). */
+/****************************************************************************/
+void
+gl_mini_preview_set_n_copies (glMiniPreview *this,
+ gint n_copies)
+{
+ if ( n_copies != this->priv->n_copies )
+ {
+ this->priv->n_copies = n_copies;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set first label number on first sheet. */
+/****************************************************************************/
+void
+gl_mini_preview_set_first (glMiniPreview *this,
+ gint first)
+{
+ if ( first != this->priv->first )
+ {
+ this->priv->first = first;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set last label number on first sheet (non-merge only). */
+/****************************************************************************/
+void
+gl_mini_preview_set_last (glMiniPreview *this,
+ gint last)
+{
+ if ( last != this->priv->last )
+ {
+ this->priv->last = last;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set collate flag (merge only). */
+/****************************************************************************/
+void
+gl_mini_preview_set_collate_flag (glMiniPreview *this,
+ gboolean collate_flag)
+{
+ if ( collate_flag != this->priv->collate_flag )
+ {
+ this->priv->collate_flag = collate_flag;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set outline flag. */
+/****************************************************************************/
+void
+gl_mini_preview_set_outline_flag (glMiniPreview *this,
+ gboolean outline_flag)
+{
+ if ( outline_flag != this->priv->outline_flag )
+ {
+ this->priv->outline_flag = outline_flag;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set reverse flag. */
+/****************************************************************************/
+void
+gl_mini_preview_set_reverse_flag (glMiniPreview *this,
+ gboolean reverse_flag)
+{
+ if ( reverse_flag != this->priv->reverse_flag )
+ {
+ this->priv->reverse_flag = reverse_flag;
+ redraw (this);
+ }
+}
+
+
+/****************************************************************************/
+/* Set crop marks flag. */
+/****************************************************************************/
+void
+gl_mini_preview_set_crop_marks_flag (glMiniPreview *this,
+ gboolean crop_marks_flag)
+{
+ if ( crop_marks_flag != this->priv->crop_marks_flag )
+ {
+ this->priv->crop_marks_flag = crop_marks_flag;
+ redraw (this);
+ }
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Set transformation and return scale. */
+/*--------------------------------------------------------------------------*/
+static gdouble
+set_transform_and_get_scale (glMiniPreview *this,
+ cairo_t *cr)
+{
+ lglTemplate *template = this->priv->template;
+ GtkAllocation allocation;
+ gdouble w, h;
+ gdouble scale;
+ gdouble offset_x, offset_y;
+
+ /* Establish scale and origin. */
+ gtk_widget_get_allocation (GTK_WIDGET (this), &allocation);
+ w = allocation.width;
+ h = allocation.height;
+
+ /* establish scale. */
+ scale = MIN( (w - 2*MARGIN - 2*SHADOW_OFFSET)/template->page_width,
+ (h - 2*MARGIN - 2*SHADOW_OFFSET)/template->page_height );
+
+ /* Find offset to center preview. */
+ offset_x = (w/scale - template->page_width) / 2.0;
+ offset_y = (h/scale - template->page_height) / 2.0;
+
+ /* Set transformation. */
+ cairo_scale (cr, scale, scale);
+ cairo_translate (cr, offset_x, offset_y);
+
+ return scale;
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Button press event handler */
+/*--------------------------------------------------------------------------*/
+static gboolean
+button_press_event_cb (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ glMiniPreview *this = GL_MINI_PREVIEW (widget);
+ GdkWindow *window;
+ cairo_t *cr;
+ gdouble scale;
+ gdouble x, y;
+ gint i;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ if ( event->button == 1 )
+ {
+
+ window = gtk_widget_get_window (this->priv->canvas);
+
+ cr = gdk_cairo_create (window);
+
+ scale = set_transform_and_get_scale (this, cr);
+
+ x = event->x;
+ y = event->y;
+ cairo_device_to_user (cr, &x, &y);
+
+ i = find_closest_label (this, x, y);
+
+ g_signal_emit (G_OBJECT(this),
+ mini_preview_signals[CLICKED],
+ 0, i);
+
+ this->priv->first_i = i;
+ this->priv->last_i = i;
+ g_signal_emit (G_OBJECT(this),
+ mini_preview_signals[PRESSED],
+ 0, this->priv->first_i, this->priv->last_i);
+
+ this->priv->dragging = TRUE;
+ this->priv->prev_i = i;
+
+ cairo_destroy (cr);
+ }
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+ return FALSE;
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Motion notify event handler */
+/*--------------------------------------------------------------------------*/
+static gboolean
+motion_notify_event_cb (GtkWidget *widget,
+ GdkEventMotion *event)
+{
+ glMiniPreview *this = GL_MINI_PREVIEW (widget);
+ GdkWindow *window;
+ cairo_t *cr;
+ gdouble scale;
+ gdouble x, y;
+ gint i;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ if (this->priv->dragging)
+ {
+ window = gtk_widget_get_window (this->priv->canvas);
+
+ cr = gdk_cairo_create (window);
+
+ scale = set_transform_and_get_scale (this, cr);
+
+ x = event->x;
+ y = event->y;
+ cairo_device_to_user (cr, &x, &y);
+
+ i = find_closest_label (this, x, y);
+
+ if ( i != this->priv->prev_i )
+ {
+ this->priv->last_i = i;
+
+ g_signal_emit (G_OBJECT(this),
+ mini_preview_signals[PRESSED],
+ 0,
+ MIN (this->priv->first_i, this->priv->last_i),
+ MAX (this->priv->first_i, this->priv->last_i));
+
+ this->priv->prev_i = i;
+ }
+ cairo_destroy (cr);
+ }
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+ return FALSE;
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Button release event handler */
+/*--------------------------------------------------------------------------*/
+static gboolean
+button_release_event_cb (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ glMiniPreview *this = GL_MINI_PREVIEW (widget);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ if ( event->button == 1 )
+ {
+ this->priv->dragging = FALSE;
+
+ }
+
+ g_signal_emit (G_OBJECT(this),
+ mini_preview_signals[RELEASED],
+ 0, this->priv->first_i, this->priv->last_i);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+ return FALSE;
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Find index+1 of label closest to given coordinates. */
+/*--------------------------------------------------------------------------*/
+static gint
+find_closest_label (glMiniPreview *this,
+ gdouble x,
+ gdouble y)
+{
+ gint i;
+ gint min_i;
+ gdouble dx, dy, d2, min_d2;
+
+ dx = x - this->priv->centers[0].x;
+ dy = y - this->priv->centers[0].y;
+ min_d2 = dx*dx + dy*dy;
+ min_i = 0;
+
+ for ( i=1; i<this->priv->labels_per_sheet; i++ )
+ {
+ dx = x - this->priv->centers[i].x;
+ dy = y - this->priv->centers[i].y;
+ d2 = dx*dx + dy*dy;
+
+ if ( d2 < min_d2 )
+ {
+ min_d2 = d2;
+ min_i = i;
+ }
+ }
+
+ return min_i + 1;
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Expose event handler. */
+/*--------------------------------------------------------------------------*/
+static gboolean
+draw_cb (GtkWidget *widget,
+ cairo_t *cr,
+ glMiniPreview *this)
+{
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ this->priv->update_scheduled_flag = FALSE;
+ draw (this, cr);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+ return FALSE;
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Style set handler (updates colors when style/theme changes). */
+/*--------------------------------------------------------------------------*/
+static void
+style_set_cb (GtkWidget *widget,
+ GtkStyle *previous_style,
+ glMiniPreview *this)
+{
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ redraw (this);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Redraw. */
+/*--------------------------------------------------------------------------*/
+static void
+redraw (glMiniPreview *this)
+{
+ GdkWindow *window;
+ GtkAllocation allocation;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ window = gtk_widget_get_window (this->priv->canvas);
+
+ if (window)
+ {
+
+ if ( !this->priv->update_scheduled_flag )
+ {
+ this->priv->update_scheduled_flag = TRUE;
+
+ gtk_widget_get_allocation (GTK_WIDGET (this), &allocation);
+ gdk_window_invalidate_rect (window, &allocation, FALSE);
+ }
+ }
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Draw mini preview. */
+/*--------------------------------------------------------------------------*/
+static void
+draw (glMiniPreview *this,
+ cairo_t *cr)
+{
+ lglTemplate *template = this->priv->template;
+ gdouble scale;
+ gdouble shadow_x, shadow_y;
+
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ if (template)
+ {
+
+ scale = set_transform_and_get_scale (this, cr);
+
+ /* update shadow */
+ shadow_x = SHADOW_OFFSET/scale;
+ shadow_y = SHADOW_OFFSET/scale;
+
+ draw_shadow (this, cr,
+ shadow_x, shadow_y,
+ template->page_width, template->page_height);
+
+ draw_paper (this, cr,
+ template->page_width, template->page_height,
+ 1.0/scale);
+
+ draw_labels (this, cr, template, 2.0/scale);
+
+ if (this->priv->draw_arrow_flag)
+ {
+ draw_arrow (this, cr);
+ }
+
+ if (this->priv->label)
+ {
+ draw_rich_preview (this, cr);
+ }
+
+ }
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Draw page shadow */
+/*--------------------------------------------------------------------------*/
+static void
+draw_shadow (glMiniPreview *this,
+ cairo_t *cr,
+ gdouble x,
+ gdouble y,
+ gdouble width,
+ gdouble height)
+{
+ GtkStyle *style;
+ guint shadow_color;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ cairo_save (cr);
+
+ cairo_rectangle (cr, x, y, width, height);
+
+ style = gtk_widget_get_style (GTK_WIDGET(this));
+ shadow_color = gl_color_from_gdk_color (&style->dark[GTK_STATE_NORMAL]);
+ cairo_set_source_rgb (cr, GL_COLOR_RGB_ARGS (shadow_color));
+
+ cairo_fill (cr);
+
+ cairo_restore (cr);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Draw page */
+/*--------------------------------------------------------------------------*/
+static void
+draw_paper (glMiniPreview *this,
+ cairo_t *cr,
+ gdouble width,
+ gdouble height,
+ gdouble line_width)
+{
+ GtkStyle *style;
+ guint paper_color, outline_color;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ cairo_save (cr);
+
+ style = gtk_widget_get_style (GTK_WIDGET(this));
+ paper_color = gl_color_from_gdk_color (&style->light[GTK_STATE_NORMAL]);
+ outline_color = gl_color_from_gdk_color (&style->fg[GTK_STATE_NORMAL]);
+
+ cairo_rectangle (cr, 0.0, 0.0, width, height);
+
+ cairo_set_source_rgb (cr, GL_COLOR_RGB_ARGS (paper_color));
+ cairo_fill_preserve (cr);
+
+ cairo_set_source_rgb (cr, GL_COLOR_RGB_ARGS (outline_color));
+ cairo_set_line_width (cr, line_width);
+ cairo_stroke (cr);
+
+ cairo_restore (cr);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Draw labels */
+/*--------------------------------------------------------------------------*/
+static void
+draw_labels (glMiniPreview *this,
+ cairo_t *cr,
+ lglTemplate *template,
+ gdouble line_width)
+{
+ const lglTemplateFrame *frame;
+ gint i, n_labels;
+ lglTemplateOrigin *origins;
+ GtkStyle *style;
+ guint base_color;
+ guint highlight_color, paper_color, outline_color;
+
+ gl_debug (DEBUG_MINI_PREVIEW, "START");
+
+ frame = (lglTemplateFrame *)template->frames->data;
+
+ n_labels = lgl_template_frame_get_n_labels (frame);
+ origins = lgl_template_frame_get_origins (frame);
+
+ style = gtk_widget_get_style (GTK_WIDGET(this));
+ base_color = gl_color_from_gdk_color (&style->base[GTK_STATE_SELECTED]);
+
+ paper_color = gl_color_from_gdk_color (&style->light[GTK_STATE_NORMAL]);
+ highlight_color = gl_color_set_opacity (base_color, 0.10);
+ if (this->priv->label)
+ {
+ /* Outlines are more subtle when doing a rich preview. */
+ outline_color = gl_color_set_opacity (base_color, 0.25);
+ }
+ else
+ {
+ outline_color = gl_color_set_opacity (base_color, 1.00);
+ }
+
+ for ( i=0; i < n_labels; i++ ) {
+
+ cairo_save (cr);
+
+ cairo_translate (cr, origins[i].x, origins[i].y);
+ gl_cairo_label_path (cr, template, FALSE, FALSE);
+
+ if ( ((i+1) >= this->priv->highlight_first) &&
+ ((i+1) <= this->priv->highlight_last) )
+ {
+ cairo_set_source_rgba (cr, GL_COLOR_RGBA_ARGS (highlight_color));
+ cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
+ cairo_fill_preserve (cr);
+ }
+
+ cairo_set_line_width (cr, line_width);
+ cairo_set_source_rgba (cr, GL_COLOR_RGBA_ARGS (outline_color));
+ cairo_stroke (cr);
+
+ cairo_restore (cr);
+
+ }
+
+ g_free (origins);
+
+ gl_debug (DEBUG_MINI_PREVIEW, "END");
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Draw arrow to indicate top of labels. */
+/*--------------------------------------------------------------------------*/
+static void
+draw_arrow (glMiniPreview *this,
+ cairo_t *cr)
+{
+ lglTemplateFrame *frame;
+ lglTemplateOrigin *origins;
+ gdouble width, height, min;
+ gdouble x0, y0;
+ GtkStyle *style;
+ guint base_color, arrow_color;
+
+ PangoLayout *layout;
+ PangoFontDescription *desc;
+ PangoRectangle rect;
+
+ /* Translators: "Up" refers to the direction towards the top of a label. */
+ const gchar *up = _("Up");
+
+ frame = (lglTemplateFrame *)this->priv->template->frames->data;
+
+ lgl_template_frame_get_size (frame, &width, &height);
+
+ if ( width != height )
+ {
+
+ origins = lgl_template_frame_get_origins (frame);
+ x0 = origins[0].x;
+ y0 = origins[0].y;
+ min = MIN (width, height);
+ g_free (origins);
+
+ cairo_save (cr);
+
+ style = gtk_widget_get_style (GTK_WIDGET(this));
+ base_color = gl_color_from_gdk_color (&style->base[GTK_STATE_SELECTED]);
+ arrow_color = gl_color_set_opacity (base_color, 0.25);
+ cairo_set_source_rgba (cr, GL_COLOR_RGBA_ARGS (arrow_color));
+
+ cairo_translate (cr, x0 + width/2, y0 + height/2);
+ cairo_scale (cr, 1, -1);
+ if ( this->priv->rotate_flag )
+ {
+ cairo_rotate (cr, -G_PI/2.0);
+ }
+
+ cairo_new_path (cr);
+ cairo_move_to (cr, 0, -min*ARROW_SCALE/3);
+ cairo_line_to (cr, 0, min*ARROW_SCALE);
+
+ cairo_new_sub_path (cr);
+ cairo_move_to (cr, -min*ARROW_SCALE/2, min*ARROW_SCALE/2);
+ cairo_line_to (cr, 0, min*ARROW_SCALE);
+ cairo_line_to (cr, min*ARROW_SCALE/2, min*ARROW_SCALE/2);
+
+ cairo_set_line_width (cr, 0.25*min*ARROW_SCALE);
+
+ cairo_stroke (cr);
+
+ layout = pango_cairo_create_layout (cr);
+
+ desc = pango_font_description_new ();
+ pango_font_description_set_family (desc, UP_FONT_FAMILY);
+ pango_font_description_set_weight (desc, PANGO_WEIGHT_BOLD);
+ pango_font_description_set_size (desc, min*UP_SCALE*PANGO_SCALE);
+ pango_layout_set_font_description (layout, desc);
+ pango_font_description_free (desc);
+
+ pango_layout_set_text (layout, up, -1);
+ pango_layout_set_width (layout, -1);
+ pango_layout_get_pixel_extents (layout, NULL, &rect);
+
+ cairo_move_to (cr, -rect.width/2, -min/4+rect.height/2);
+
+ cairo_scale (cr, 1, -1);
+ pango_cairo_show_layout (cr, layout);
+
+ cairo_restore (cr);
+
+ }
+}
+
+
+/*--------------------------------------------------------------------------*/
+/* Draw rich preview using print renderers. */
+/*--------------------------------------------------------------------------*/
+static void
+draw_rich_preview (glMiniPreview *this,
+ cairo_t *cr)
+{
+ glMerge *merge;
+ glPrintState state;
+
+ merge = gl_label_get_merge (this->priv->label);
+
+ if (!merge)
+ {
+ gl_print_simple_sheet (this->priv->label,
+ cr,
+ this->priv->page,
+ this->priv->n_sheets,
+ this->priv->first,
+ this->priv->last,
+ this->priv->outline_flag,
+ this->priv->reverse_flag,
+ this->priv->crop_marks_flag);
+ }
+ else
+ {
+ /* FIXME: maybe the renderers should be more self contained.
+ * This will only work for the first page, since
+ * previous pages must be rendered to establish
+ * state.
+ */
+ state.i_copy = 0;
+ state.p_record = (GList *)gl_merge_get_record_list (merge);
+
+ if (this->priv->collate_flag)
+ {
+ gl_print_collated_merge_sheet (this->priv->label,
+ cr,
+ this->priv->page,
+ this->priv->n_copies,
+ this->priv->first,
+ this->priv->outline_flag,
+ this->priv->reverse_flag,
+ this->priv->crop_marks_flag,
+ &state);
+ }
+ else
+ {
+ gl_print_uncollated_merge_sheet (this->priv->label,
+ cr,
+ this->priv->page,
+ this->priv->n_copies,
+ this->priv->first,
+ this->priv->outline_flag,
+ this->priv->reverse_flag,
+ this->priv->crop_marks_flag,
+ &state);
+ }
+ }
+}
+
+
+
+/*
+ * Local Variables: -- emacs
+ * mode: C -- emacs
+ * c-basic-offset: 8 -- emacs
+ * tab-width: 8 -- emacs
+ * indent-tabs-mode: nil -- emacs
+ * End: -- emacs
+ */
projects / glabels / blobdiff