mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-22 20:36:50 +03:00
1998-03-11 Federico Mena Quintero <federico@nuclecu.unam.mx>
* gmc-chargrid.h: * gmc-chargrid.c: New Character Grid widget for the file viewer. This is a very lean and fast widget for displaying a grid of monospaced characters. Just like a crippled-down terminal.
This commit is contained in:
Miguel de Icaza
parent
d934dc4afe
commit
c3b299f39a
@ -1,3 +1,10 @@
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1998-03-11 Federico Mena Quintero <federico@nuclecu.unam.mx>
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* gmc-chargrid.h:
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* gmc-chargrid.c: New Character Grid widget for the file viewer.
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This is a very lean and fast widget for displaying a grid of
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monospaced characters. Just like a crippled-down terminal.
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Tue Mar 10 23:46:29 1998 Miguel de Icaza <miguel@nuclecu.unam.mx>
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Tue Mar 10 23:46:29 1998 Miguel de Icaza <miguel@nuclecu.unam.mx>
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* glayout.c
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* glayout.c
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@ -26,13 +26,15 @@ GNOMESRCS = \
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gtools.c \
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gtools.c \
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gdesktop.c \
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gdesktop.c \
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gutil.c \
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gutil.c \
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gtrans.c
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gtrans.c \
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gmc-chargrid.c
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GNOMEHDRS = \
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GNOMEHDRS = \
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gmain.h \
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gmain.h \
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gscreen.h \
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gscreen.h \
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gwidget.h \
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gwidget.h \
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gconf.h
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gconf.h \
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gmc-chargrid.h
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#
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#
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# These objects from ../src do not depend on HAVE_X / HAVE_GNOME??
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# These objects from ../src do not depend on HAVE_X / HAVE_GNOME??
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@ -52,7 +54,7 @@ OOBJS = main.o dlg.o screen.o widget.o wtools.o info.o boxes.o \
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OBJS = $(LOBJS) $(OOBJS) \
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OBJS = $(LOBJS) $(OOBJS) \
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gkey.o gmain.o gscreen.o gwidget.o gmenu.o ghelp.o ginfo.o \
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gkey.o gmain.o gscreen.o gwidget.o gmenu.o ghelp.o ginfo.o \
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glayout.o gtools.o gdesktop.o gtrans.o gutil.o
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glayout.o gtools.o gdesktop.o gtrans.o gutil.o gmc-chargrid.o
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#
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#
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# Distribution variables
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# Distribution variables
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494
gnome/gmc-chargrid.c
Normal file
494
gnome/gmc-chargrid.c
Normal file
@ -0,0 +1,494 @@
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/* GmcCharGrid Widget - Simple character grid for the gmc viewer
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*
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* Copyright (C) 1997 The Free Software Foundation
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*
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* Author: Federico Mena <federico@nuclecu.unam.mx>
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*/
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#include <gtk/gtksignal.h>
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#include "gmc-chargrid.h"
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#define DEFAULT_WIDTH 80
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#define DEFAULT_HEIGHT 25
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#define DEFAULT_FONT "fixed"
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#define CHARS(cgrid) ((char *) cgrid->chars)
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#define COLORS(cgrid) ((gulong *) cgrid->colors)
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enum {
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SIZE_CHANGED,
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LAST_SIGNAL
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};
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typedef void (* GmcCharGridSignal1) (GtkObject *object,
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guint arg1,
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guint arg2,
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gpointer data);
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static void gmc_char_grid_marshal_signal_1 (GtkObject *object,
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GtkSignalFunc func,
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gpointer func_data,
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GtkArg *args);
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static void gmc_char_grid_class_init (GmcCharGridClass *class);
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static void gmc_char_grid_init (GmcCharGrid *cgrid);
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static void gmc_char_grid_destroy (GtkObject *object);
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static void gmc_char_grid_realize (GtkWidget *widget);
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static void gmc_char_grid_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static void gmc_char_grid_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static gint gmc_char_grid_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gmc_char_grid_real_size_changed (GmcCharGrid *cgrid,
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guint width,
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guint height);
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static GtkWidgetClass *parent_class;
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static guint cgrid_signals[LAST_SIGNAL] = { 0 };
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guint
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gmc_char_grid_get_type (void)
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{
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static guint cgrid_type = 0;
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if (!cgrid_type) {
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GtkTypeInfo cgrid_info = {
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"GmcCharGrid",
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sizeof (GmcCharGrid),
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sizeof (GmcCharGridClass),
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(GtkClassInitFunc) gmc_char_grid_class_init,
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(GtkObjectInitFunc) gmc_char_grid_init,
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(GtkArgSetFunc) NULL,
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(GtkArgGetFunc) NULL
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};
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cgrid_type = gtk_type_unique (gtk_widget_get_type (), &cgrid_info);
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}
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return cgrid_type;
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}
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static void
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gmc_char_grid_class_init (GmcCharGridClass *class)
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{
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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object_class = (GtkObjectClass *) class;
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widget_class = (GtkWidgetClass *) class;
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parent_class = gtk_type_class (gtk_widget_get_type ());
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cgrid_signals[SIZE_CHANGED] =
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gtk_signal_new ("size_changed",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GmcCharGridClass, size_changed),
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gmc_char_grid_marshal_signal_1,
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GTK_TYPE_NONE, 2,
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GTK_TYPE_UINT,
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GTK_TYPE_UINT);
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gtk_object_class_add_signals (object_class, cgrid_signals, LAST_SIGNAL);
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object_class->destroy = gmc_char_grid_destroy;
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widget_class->realize = gmc_char_grid_realize;
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widget_class->size_request = gmc_char_grid_size_request;
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widget_class->size_allocate = gmc_char_grid_size_allocate;
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widget_class->expose_event = gmc_char_grid_expose;
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class->size_changed = gmc_char_grid_real_size_changed;
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}
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static void
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gmc_char_grid_init (GmcCharGrid *cgrid)
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{
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cgrid->width = 0;
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cgrid->height = 0;
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cgrid->chars = NULL;
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cgrid->colors = NULL;
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cgrid->frozen = 0;
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cgrid->font = NULL;
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cgrid->gc = NULL;
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cgrid->char_width = 0;
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cgrid->char_height = 0;
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cgrid->char_y = 0;
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}
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GtkWidget *
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gmc_char_grid_new (void)
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{
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GmcCharGrid *cgrid;
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cgrid = gtk_type_new (gmc_char_grid_get_type ());
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gmc_char_grid_set_font (cgrid, DEFAULT_FONT);
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gmc_char_grid_set_size (cgrid, DEFAULT_WIDTH, DEFAULT_HEIGHT);
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return GTK_WIDGET (cgrid);
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}
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static void
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gmc_char_grid_destroy (GtkObject *object)
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{
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GmcCharGrid *cgrid;
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g_return_if_fail (object != NULL);
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g_return_if_fail (GMC_IS_CHAR_GRID (object));
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cgrid = GMC_CHAR_GRID (object);
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if (cgrid->chars)
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g_free (cgrid->chars);
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if (cgrid->colors)
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g_free (cgrid->colors);
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if (cgrid->font)
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gdk_font_unref (cgrid->font);
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if (cgrid->gc)
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gdk_gc_destroy (cgrid->gc);
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if (GTK_OBJECT_CLASS (parent_class)->destroy)
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(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
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}
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static void
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gmc_char_grid_realize (GtkWidget *widget)
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{
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GdkWindowAttr attributes;
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gint attributes_mask;
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GmcCharGrid *cgrid;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GMC_IS_CHAR_GRID (widget));
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cgrid = GMC_CHAR_GRID (widget);
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GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
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attributes.x = widget->allocation.x + (widget->allocation.width - cgrid->char_width * cgrid->width) / 2;
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attributes.y = widget->allocation.y + (widget->allocation.height - cgrid->char_height * cgrid->height) / 2;
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attributes.width = cgrid->width * cgrid->char_width;
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attributes.height = cgrid->height * cgrid->char_height;
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attributes.window_type = GDK_WINDOW_CHILD;
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attributes.wclass = GDK_INPUT_OUTPUT;
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attributes.visual = gtk_widget_get_visual (widget);
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attributes.colormap = gtk_widget_get_colormap (widget);
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attributes.event_mask = (gtk_widget_get_events (widget)
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| GDK_EXPOSURE_MASK);
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attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
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widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
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gdk_window_set_user_data (widget->window, widget);
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cgrid->gc = gdk_gc_new (cgrid->widget.window);
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widget->style = gtk_style_attach (widget->style, widget->window);
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gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
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}
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static void
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gmc_char_grid_size_request (GtkWidget *widget, GtkRequisition *requisition)
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{
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GmcCharGrid *cgrid;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GMC_IS_CHAR_GRID (widget));
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g_return_if_fail (requisition != NULL);
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cgrid = GMC_CHAR_GRID (widget);
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requisition->width = cgrid->width * cgrid->char_width;
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requisition->height = cgrid->height * cgrid->char_height;
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}
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static void
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gmc_char_grid_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
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{
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GmcCharGrid *cgrid;
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int w, h;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GMC_IS_CHAR_GRID (widget));
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g_return_if_fail (allocation != NULL);
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widget->allocation = *allocation;
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cgrid = GMC_CHAR_GRID (widget);
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w = allocation->width / cgrid->char_width;
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h = allocation->height / cgrid->char_height;
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if (GTK_WIDGET_REALIZED (widget))
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gdk_window_move_resize (widget->window,
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allocation->x + (allocation->width - cgrid->char_width * cgrid->width) / 2,
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allocation->y + (allocation->height - cgrid->char_height * cgrid->height) / 2,
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cgrid->width * cgrid->char_width,
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cgrid->height * cgrid->char_height);
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if ((w != cgrid->width) || (h != cgrid->height))
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gmc_char_grid_set_size (cgrid, MAX (w, 1), MAX (h, 1));
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}
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static void
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update_strip (GmcCharGrid *cgrid, int x, int y, int width)
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{
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int i;
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char *chars;
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gulong *colors;
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int first;
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gulong color;
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GdkColor gcolor;
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chars = CHARS (cgrid) + (cgrid->width * y + x);
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colors = COLORS (cgrid) + (cgrid->width * y + x);
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i = 0;
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while (i < width) {
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first = i;
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color = colors[i];
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do {
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i++;
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} while ((i < width) && (color == colors[i]));
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gcolor.pixel = color;
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gdk_gc_set_foreground (cgrid->gc, &gcolor);
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gdk_draw_text (cgrid->widget.window,
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cgrid->font,
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cgrid->gc,
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(first + x) * cgrid->char_width,
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y * cgrid->char_height + cgrid->char_y,
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&chars[first],
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i - first);
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}
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}
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static void
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update_region (GmcCharGrid *cgrid, int x, int y, int width, int height)
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{
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int i;
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if ((width == 0) || (height == 0))
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return;
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gdk_window_clear_area (cgrid->widget.window,
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x * cgrid->char_width,
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y * cgrid->char_height,
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width * cgrid->char_width,
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height * cgrid->char_height);
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for (i = 0; i < height; i++)
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update_strip (cgrid, x, y + i, width);
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}
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static gint
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gmc_char_grid_expose (GtkWidget *widget, GdkEventExpose *event)
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{
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GmcCharGrid *cgrid;
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int x1, y1, x2, y2;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GMC_IS_CHAR_GRID (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_DRAWABLE (widget)) {
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cgrid = GMC_CHAR_GRID (widget);
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x1 = event->area.x / cgrid->char_width;
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y1 = event->area.y / cgrid->char_height;
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x2 = (event->area.x + event->area.width) / cgrid->char_width;
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y2 = (event->area.y + event->area.height) / cgrid->char_height;
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update_region (cgrid, x1, y1, (x2 - x1) + 1, (y2 - y1) + 1);
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}
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return FALSE;
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}
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void
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gmc_char_grid_clear (GmcCharGrid *cgrid, int x, int y, int width, int height)
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|
{
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|
int x1, y1, x2, y2;
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|
int xx, yy;
|
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|
char *ch;
|
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|
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g_return_if_fail (cgrid != NULL);
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g_return_if_fail (GMC_IS_CHAR_GRID (cgrid));
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x1 = MAX (x, 0);
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||||||
|
y1 = MAX (y, 0);
|
||||||
|
x2 = MIN (x + width, cgrid->width);
|
||||||
|
y2 = MIN (y + height, cgrid->height);
|
||||||
|
|
||||||
|
ch = CHARS (cgrid) + (y1 * cgrid->width + x1);
|
||||||
|
|
||||||
|
for (yy = y1; yy < y2; yy++) {
|
||||||
|
for (xx = x1; xx < x2; xx++)
|
||||||
|
ch[xx] = ' ';
|
||||||
|
|
||||||
|
ch += cgrid->width;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (GTK_WIDGET_DRAWABLE (cgrid) && !cgrid->frozen)
|
||||||
|
update_region (cgrid, x, y, width, height);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
gmc_char_grid_put_char (GmcCharGrid *cgrid, int x, int y, gulong pixel, char ch)
|
||||||
|
{
|
||||||
|
char *chars;
|
||||||
|
gulong *colors;
|
||||||
|
|
||||||
|
g_return_if_fail (cgrid != NULL);
|
||||||
|
g_return_if_fail (GMC_IS_CHAR_GRID (cgrid));
|
||||||
|
|
||||||
|
if ((x < 0) || (x >= cgrid->width)
|
||||||
|
|| (y < 0) || (y >= cgrid->height))
|
||||||
|
return;
|
||||||
|
|
||||||
|
chars = CHARS (cgrid);
|
||||||
|
colors = COLORS (cgrid);
|
||||||
|
|
||||||
|
chars[y * cgrid->width + x] = ch;
|
||||||
|
colors[y * cgrid->width + x] = pixel;
|
||||||
|
|
||||||
|
if (GTK_WIDGET_DRAWABLE (cgrid) && !cgrid->frozen)
|
||||||
|
update_region (cgrid, x, y, 1, 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
gmc_char_grid_put_string (GmcCharGrid *cgrid, int x, int y, gulong pixel, char *str)
|
||||||
|
{
|
||||||
|
char *chars;
|
||||||
|
gulong *colors;
|
||||||
|
int i, pos;
|
||||||
|
|
||||||
|
g_return_if_fail (cgrid != NULL);
|
||||||
|
g_return_if_fail (GMC_IS_CHAR_GRID (cgrid));
|
||||||
|
|
||||||
|
if ((x < 0) || (x >= cgrid->width)
|
||||||
|
|| (y < 0) || (y >= cgrid->height))
|
||||||
|
return;
|
||||||
|
|
||||||
|
chars = CHARS (cgrid) + (cgrid->width * y + x);
|
||||||
|
colors = COLORS (cgrid) + (cgrid->width * y + x);
|
||||||
|
|
||||||
|
for (i = 0, pos = x; (pos < cgrid->width) && *str; i++, pos++) {
|
||||||
|
*chars++ = *str++;
|
||||||
|
*colors++ = pixel;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (GTK_WIDGET_DRAWABLE (cgrid) && !cgrid->frozen)
|
||||||
|
update_region (cgrid, x, y, i, 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
gmc_char_grid_set_font (GmcCharGrid *cgrid, const char *font_name)
|
||||||
|
{
|
||||||
|
g_return_if_fail (cgrid != NULL);
|
||||||
|
g_return_if_fail (GMC_IS_CHAR_GRID (cgrid));
|
||||||
|
|
||||||
|
if (cgrid->font)
|
||||||
|
gdk_font_unref (cgrid->font);
|
||||||
|
|
||||||
|
cgrid->font = gdk_font_load (font_name);
|
||||||
|
|
||||||
|
if (!cgrid->font)
|
||||||
|
cgrid->font = gdk_font_load (DEFAULT_FONT);
|
||||||
|
|
||||||
|
cgrid->char_width = gdk_char_width (cgrid->font, ' '); /* assume monospaced font! */
|
||||||
|
cgrid->char_height = cgrid->font->ascent + cgrid->font->descent;
|
||||||
|
cgrid->char_y = cgrid->font->ascent;
|
||||||
|
|
||||||
|
gtk_widget_queue_resize (GTK_WIDGET (cgrid));
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
gmc_char_grid_set_size (GmcCharGrid *cgrid, guint width, guint height)
|
||||||
|
{
|
||||||
|
gtk_signal_emit (GTK_OBJECT (cgrid), cgrid_signals[SIZE_CHANGED], width, height);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
gmc_char_grid_freeze (GmcCharGrid *cgrid)
|
||||||
|
{
|
||||||
|
g_return_if_fail (cgrid != NULL);
|
||||||
|
g_return_if_fail (GMC_IS_CHAR_GRID (cgrid));
|
||||||
|
|
||||||
|
cgrid->frozen = TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
gmc_char_grid_thaw (GmcCharGrid *cgrid)
|
||||||
|
{
|
||||||
|
g_return_if_fail (cgrid != NULL);
|
||||||
|
g_return_if_fail (GMC_IS_CHAR_GRID (cgrid));
|
||||||
|
|
||||||
|
cgrid->frozen = FALSE;
|
||||||
|
|
||||||
|
if (GTK_WIDGET_DRAWABLE (cgrid))
|
||||||
|
gtk_widget_queue_draw (GTK_WIDGET (cgrid));
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gmc_char_grid_marshal_signal_1 (GtkObject *object, GtkSignalFunc func, gpointer func_data, GtkArg *args)
|
||||||
|
{
|
||||||
|
GmcCharGridSignal1 rfunc;
|
||||||
|
|
||||||
|
rfunc = (GmcCharGridSignal1) func;
|
||||||
|
|
||||||
|
(*rfunc) (object, GTK_VALUE_UINT (args[0]), GTK_VALUE_UINT (args[1]), func_data);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
gmc_char_grid_real_size_changed (GmcCharGrid *cgrid, guint width, guint height)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
char *chars;
|
||||||
|
gulong *colors;
|
||||||
|
|
||||||
|
g_return_if_fail (cgrid != NULL);
|
||||||
|
g_return_if_fail (GMC_IS_CHAR_GRID (cgrid));
|
||||||
|
g_return_if_fail ((width > 0) && (height > 0));
|
||||||
|
|
||||||
|
if ((width == cgrid->width) && (height == cgrid->height))
|
||||||
|
return;
|
||||||
|
|
||||||
|
cgrid->width = width;
|
||||||
|
cgrid->height = height;
|
||||||
|
|
||||||
|
if (cgrid->chars)
|
||||||
|
g_free (cgrid->chars);
|
||||||
|
|
||||||
|
if (cgrid->colors)
|
||||||
|
g_free (cgrid->colors);
|
||||||
|
|
||||||
|
chars = g_new (char, width * height);
|
||||||
|
cgrid->chars = chars;
|
||||||
|
|
||||||
|
colors = g_new (gulong, width * height);
|
||||||
|
cgrid->colors = colors;
|
||||||
|
|
||||||
|
for (i = 0; i < (width * height); i++) {
|
||||||
|
chars[i] = ' ';
|
||||||
|
colors[i] = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
gtk_widget_queue_resize (GTK_WIDGET (cgrid));
|
||||||
|
}
|
||||||
69
gnome/gmc-chargrid.h
Normal file
69
gnome/gmc-chargrid.h
Normal file
@ -0,0 +1,69 @@
|
|||||||
|
/* GmcCharGrid Widget - Simple character grid for the gmc viewer
|
||||||
|
*
|
||||||
|
* Copyright (C) 1997 The Free Software Foundation
|
||||||
|
*
|
||||||
|
* Author: Federico Mena <federico@nuclecu.unam.mx>
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef GMC_CHARGRID_H
|
||||||
|
#define GMC_CHARGRID_H
|
||||||
|
|
||||||
|
|
||||||
|
#include <gtk/gtkwidget.h>
|
||||||
|
#include <libgnome/gnome-defs.h>
|
||||||
|
|
||||||
|
|
||||||
|
BEGIN_GNOME_DECLS
|
||||||
|
|
||||||
|
|
||||||
|
#define GMC_CHAR_GRID(obj) GTK_CHECK_CAST (obj, gmc_char_grid_get_type (), GmcCharGrid)
|
||||||
|
#define GMC_CHAR_GRID_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gmc_char_grid_get_type (), GmcCharGridClass)
|
||||||
|
#define GMC_IS_CHAR_GRID(obj) GTK_CHECK_TYPE (obj, gmc_char_grid_get_type ())
|
||||||
|
|
||||||
|
|
||||||
|
typedef struct _GmcCharGrid GmcCharGrid;
|
||||||
|
typedef struct _GmcCharGridClass GmcCharGridClass;
|
||||||
|
|
||||||
|
struct _GmcCharGrid {
|
||||||
|
GtkWidget widget;
|
||||||
|
|
||||||
|
int width;
|
||||||
|
int height;
|
||||||
|
|
||||||
|
void *chars;
|
||||||
|
void *colors;
|
||||||
|
|
||||||
|
int frozen;
|
||||||
|
|
||||||
|
GdkFont *font;
|
||||||
|
GdkGC *gc;
|
||||||
|
|
||||||
|
int char_width;
|
||||||
|
int char_height;
|
||||||
|
int char_y;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct _GmcCharGridClass {
|
||||||
|
GtkWidgetClass parent_class;
|
||||||
|
|
||||||
|
void (* size_changed) (GmcCharGrid *cgrid, guint width, guint height);
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
guint gmc_char_grid_get_type (void);
|
||||||
|
GtkWidget *gmc_char_grid_new (void);
|
||||||
|
|
||||||
|
void gmc_char_grid_clear (GmcCharGrid *cgrid, int x, int y, int width, int height);
|
||||||
|
void gmc_char_grid_put_char (GmcCharGrid *cgrid, int x, int y, gulong pixel, char ch);
|
||||||
|
void gmc_char_grid_put_string (GmcCharGrid *cgrid, int x, int y, gulong pixel, char *str);
|
||||||
|
|
||||||
|
void gmc_char_grid_set_font (GmcCharGrid *cgrid, const char *font_name);
|
||||||
|
void gmc_char_grid_set_size (GmcCharGrid *cgrid, guint width, guint height);
|
||||||
|
|
||||||
|
void gmc_char_grid_freeze (GmcCharGrid *cgrid);
|
||||||
|
void gmc_char_grid_thaw (GmcCharGrid *cgrid);
|
||||||
|
|
||||||
|
|
||||||
|
END_GNOME_DECLS
|
||||||
|
|
||||||
|
#endif
|
||||||
Loading…
Reference in New Issue
Block a user