hi, I have just subscibed to this mailing list.
I would like some help concerning the use of simple GtkPlot widgets inside Gtk containers, such as GtkFrame, GtkVbox, etc. I have read in the mailing list archive it could be possible using a GtkDrawingArea for drawing the plots. But I personnaly never managed to get anything displayed. I took an example code from this mailing list archive, but never managed to get it into running on Gtk+extra 2.0. Here is the link for the original program : http://mail.gnome.org/archives/gtk-app-devel-list/2002-December/msg00037.html My modified version in order to get it compiling with GTK+Extra 2 follows. The results are a bunch of messages of the form : (plot2:3556): Gtk-CRITICAL **: gtk_widget_realize: assertion `GTK_WIDGET_ANCHORED (widget) || GTK_IS_INVISIBLE (widget)' failed (plot2:3556): Gtk-CRITICAL **: gtk_widget_real_map: assertion `GTK_WIDGET_REALIZED (widget) == TRUE' failed (plot2:3556): Gdk-CRITICAL **: gdk_window_invalidate_rect: assertion `window != NULL' failed (plot2:3556): Gtk-CRITICAL **: gtk_widget_realize: assertion `GTK_WIDGET_ANCHORED (widget) || GTK_IS_INVISIBLE (widget)' failed ....... and so on. No data is displayed, the allocated drawing frame stays grey. Could anybody have a look at the code of this program and tell me where the problem is ? Thanks in advance, -- François Galea #include <math.h> #include <stdio.h> #include <stdlib.h> #include <gtk/gtk.h> #include <gdk/gdk.h> #include "gtkextra/gtkplot.h" #include "gtkextra/gtkplotdata.h" #include "gtkextra/gtkplotcanvas.h" #include "gtkextra/gtkplotcanvasplot.h" #include "gtkextra/gtkplotcanvastext.h" static gboolean drawing_area_events(GtkWidget * calling_widget, GdkEvent * event, GtkWidget * da_window); GdkPixmap *pixmap = NULL; GtkPlotData *dataset; gint32 timer; volatile unsigned long *share; void set_plot(GtkWidget * active_plot) { GdkColor color; color.red = 0x0000; color.green = 0x9999; color.blue = 0x0000; gdk_color_alloc(gtk_widget_get_colormap(active_plot), &color); gtk_plot_set_background(GTK_PLOT(active_plot), &color); gtk_plot_set_range(GTK_PLOT(active_plot), 0., 400, -80, 20); gtk_plot_set_ticks(GTK_PLOT(active_plot), GTK_PLOT_AXIS_X, 10, 1); gtk_plot_set_ticks(GTK_PLOT(active_plot), GTK_PLOT_AXIS_Y, 10, 1); /* gtk_plot_axis_labels_set_numbers( GTK_PLOT( active_plot ), 2, 0, 0 ); gtk_plot_axis_labels_set_numbers( GTK_PLOT( active_plot ), 3, 0, 0 ); */ gtk_plot_axis_set_visible(gtk_plot_get_axis(GTK_PLOT(active_plot), GTK_PLOT_AXIS_TOP), FALSE); gtk_plot_axis_set_visible(gtk_plot_get_axis(GTK_PLOT(active_plot), GTK_PLOT_AXIS_RIGHT), FALSE); gtk_plot_hide_legends(GTK_PLOT(active_plot)); gtk_plot_grids_set_visible(GTK_PLOT(active_plot), TRUE, TRUE, TRUE, TRUE); gtk_plot_axis_hide_title(gtk_plot_get_axis(GTK_PLOT(active_plot), GTK_PLOT_AXIS_TOP)); gtk_plot_axis_hide_title(gtk_plot_get_axis(GTK_PLOT(active_plot), GTK_PLOT_AXIS_RIGHT)); gtk_plot_axis_set_title(gtk_plot_get_axis(GTK_PLOT(active_plot), GTK_PLOT_AXIS_LEFT), "Intensity (dB)"); gtk_plot_axis_set_title(gtk_plot_get_axis (GTK_PLOT(active_plot), GTK_PLOT_AXIS_BOTTOM), "Time (s)"); gtk_widget_show(active_plot); dataset = GTK_PLOT_DATA(gtk_plot_data_new()); gtk_plot_add_data(GTK_PLOT(active_plot), dataset); gdk_color_parse("red", &color); gdk_color_alloc(gtk_widget_get_colormap(active_plot), &color); //gdk_color_alloc(gdk_colormap_get_system(), color); gtk_plot_data_set_line_attributes(dataset, GTK_PLOT_LINE_SOLID, 0, 0, 1, &color); } void quit() { if (timer) gtk_timeout_remove(timer); gtk_main_quit(); } gint update(gpointer data) { GtkPlot *plot; gdouble x, y; gdouble xmin, xmax; gdouble data1[1024], data2[1024]; /* int Pos, pos, i; */ int i; /* unsigned char *base; base = (unsigned char *) ((unsigned char *) share + POS_SIZE); Pos = pos = *(int *) share + 2 * sizeof(float) + header_size + sizeof(int); */ for (i = 0; i < 400; i++ /*, pos += 8 * sizeof(float) */) { data1[i] = rand() % 20; } plot = GTK_PLOT(data); // gtk_plot_remove_data(plot,dataset); gtk_plot_paint(plot); gtk_plot_refresh(plot, NULL); gtk_plot_data_set_numpoints(dataset, 400); for (i = 0; i < 400; i++) data2[i] = i; gtk_plot_data_set_x(dataset, data2); gtk_plot_data_set_y(dataset, data1); gtk_plot_get_xrange(plot, &data2[0], &data2[400 - 1]); gtk_plot_data_draw_points(dataset, 400); gtk_plot_refresh(plot, NULL); //gtk_plot_refresh(GTK_PLOT(active_plot),GTK_WIDGET(drawing_area)->allocation); return TRUE; } int main(int argc, char *argv[]) { GtkWidget *window; GtkWidget *plot; GtkWidget *drawing; GtkWidget *vbox1; GtkWidget *hbuttonbox1; GtkWidget *Rec_Acq; GtkWidget *hbox1; GtkPlot *ptr; // Connect to share memory SHMEM to get IQ /* share = (unsigned long *) get_share_mem(); */ gtk_init(&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window), "Real Time PII Display"); gtk_widget_set_usize(window, 400, 400); gtk_container_border_width(GTK_CONTAINER(window), 0); gtk_widget_show(window); gtk_signal_connect(GTK_OBJECT(window), "destroy", GTK_SIGNAL_FUNC(quit), NULL); vbox1 = gtk_vbox_new(FALSE, 0); gtk_widget_ref(vbox1); gtk_object_set_data_full(GTK_OBJECT(window), "vbox1", vbox1, (GtkDestroyNotify) gtk_widget_unref); gtk_widget_show(vbox1); gtk_container_add(GTK_CONTAINER(window), vbox1); hbuttonbox1 = gtk_hbutton_box_new(); gtk_widget_ref(hbuttonbox1); gtk_object_set_data_full(GTK_OBJECT(window), "hbuttonbox1", hbuttonbox1, (GtkDestroyNotify) gtk_widget_unref); gtk_widget_show(hbuttonbox1); gtk_box_pack_start(GTK_BOX(vbox1), hbuttonbox1, FALSE, FALSE, 1); gtk_widget_set_usize(hbuttonbox1, -2, 33); gtk_container_set_border_width(GTK_CONTAINER(hbuttonbox1), 0); gtk_button_box_set_layout(GTK_BUTTON_BOX(hbuttonbox1), GTK_BUTTONBOX_START); gtk_button_box_set_spacing(GTK_BUTTON_BOX(hbuttonbox1), 10); Rec_Acq = gtk_button_new_with_label("Rec Acq"); gtk_widget_ref(Rec_Acq); gtk_object_set_data_full(GTK_OBJECT(window), "Configure", Rec_Acq, (GtkDestroyNotify) gtk_widget_unref); gtk_widget_show(Rec_Acq); gtk_box_pack_start(GTK_BOX(hbuttonbox1), Rec_Acq, FALSE, FALSE, 0); GTK_WIDGET_SET_FLAGS(Rec_Acq, GTK_CAN_DEFAULT); hbox1 = gtk_hbox_new(FALSE, 0); gtk_widget_ref(hbox1); gtk_object_set_data_full(GTK_OBJECT(window), "hbox1", hbox1, (GtkDestroyNotify) gtk_widget_unref); gtk_widget_show(hbox1); gtk_box_pack_end(GTK_BOX(vbox1), hbox1, TRUE, TRUE, 0); gtk_container_set_border_width(GTK_CONTAINER(hbox1), 5); drawing = gtk_drawing_area_new(); gtk_container_add(GTK_CONTAINER(hbox1), drawing); gtk_object_set_data(GTK_OBJECT(hbox1), "drawing area", drawing); gtk_widget_show(drawing); plot = gtk_plot_new(NULL); ptr = (GtkPlot *) plot; ptr->width = .8; ptr->height = .8; ptr->bottom->title.y = ptr->height + .185; // gtk_widget_show(plot); gtk_object_set_data(GTK_OBJECT(hbox1), "active plot", plot); //gtk_plot_set_drawable(GTK_PLOT(plot),GTK_WIDGET(drawing)->window); gtk_signal_connect(GTK_OBJECT(drawing), "configure_event", GTK_SIGNAL_FUNC(drawing_area_events), hbox1); gtk_signal_connect(GTK_OBJECT(drawing), "expose_event", GTK_SIGNAL_FUNC(drawing_area_events), hbox1); gtk_signal_connect(GTK_OBJECT(drawing), "destroy_event", GTK_SIGNAL_FUNC(drawing_area_events), hbox1); gtk_main(); return (0); } /* Function to handle drawing area events */ gboolean drawing_area_events(GtkWidget * calling_widget, GdkEvent * event, GtkWidget * da_window) { /* Declaring local variables */ GtkWidget *drawing_area; GtkWidget *active_plot; GdkColor color; /* If event is "destroy"... */ if (event->type == GDK_DESTROY) return (TRUE); /* If event is "configure"... */ if (event->type == GDK_CONFIGURE) { drawing_area = gtk_object_get_data(GTK_OBJECT(da_window), "drawing area"); active_plot = gtk_object_get_data(GTK_OBJECT(da_window), "active plot"); if (drawing_area && active_plot) { if (!GTK_WIDGET_REALIZED(drawing_area)) return FALSE; if (!GTK_PLOT(active_plot)->drawable) { GTK_WIDGET(active_plot)->parent = GTK_WIDGET(drawing_area)->parent; if (!GTK_WIDGET_DRAWABLE(GTK_WIDGET(active_plot))) { gtk_widget_show(GTK_WIDGET(active_plot)); gtk_widget_map(GTK_WIDGET(active_plot)); } GTK_WIDGET(active_plot)->window = GTK_WIDGET(drawing_area)->window; } if (GTK_PLOT(active_plot)->drawable) gdk_pixmap_unref(GTK_PLOT(active_plot)->drawable); GTK_PLOT(active_plot)->drawable = gdk_pixmap_new(GTK_WIDGET(drawing_area)->window, GTK_WIDGET(drawing_area)->allocation.width, GTK_WIDGET(drawing_area)->allocation.height, -1); gdk_draw_rectangle(GTK_PLOT(active_plot)->drawable, GTK_WIDGET(drawing_area)->style->white_gc, TRUE, 0, 0, GTK_WIDGET(drawing_area)->allocation.width, GTK_WIDGET(drawing_area)->allocation.height); gtk_plot_set_drawable(GTK_PLOT(active_plot), GTK_PLOT(active_plot)->drawable); GTK_WIDGET(active_plot)->allocation.x = 0; GTK_WIDGET(active_plot)->allocation.y = 0; GTK_WIDGET(active_plot)->allocation.width = GTK_WIDGET(drawing_area)->allocation.width; GTK_WIDGET(active_plot)->allocation.height = GTK_WIDGET(drawing_area)->allocation.height; set_plot(active_plot); gtk_widget_show_all(da_window); if (!timer) timer = gtk_timeout_add(300, update, active_plot); //gtk_plot_export_ps (GTK_PLOT(active_plot), "demo.ps", 0, 0, GTK_PLOT_LETTER); } } /* If event is "expose"... */ if (event->type == GDK_EXPOSE) { active_plot = gtk_object_get_data(GTK_OBJECT(da_window), "active plot"); if (active_plot) gtk_plot_refresh(GTK_PLOT(active_plot), NULL); } /* Do not propogate event? */ return (TRUE); } /* End of drawing_area_events() */ _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
