app/gradient.c app/Makefile.am

Wed Nov  4 22:23:18 GMT 1998 Andy Thomas <alt@picnic.demon.co.uk>

	* app/gradient.c
	* app/Makefile.am

	New files

	* app/gradient_select.c
	* app/gradient_header.h

	Split gradient selector dialog out of the main gradient code.
	New gradient headerfile that contains the key gradient structures
	and #defines.

ChangeLog

 
+Wed Nov  4 22:23:18 GMT 1998 Andy Thomas <alt@picnic.demon.co.uk>
+
+	* app/gradient.c 
+	* app/Makefile.am
+
+	New files
+
+	* app/gradient_select.c
+	* app/gradient_header.h
+
+	Split gradient selector dialog out of the main gradient code.
+	New gradient headerfile that contains the key gradient structures
+	and #defines.
+
 Tue Nov  3 21:47:53 GMT 1998 Andy Thomas <alt@picnic.demon.co.uk>
 
 	* plug-ins/script-fu/scripts/comic-logo.scm

app/Makefile.am

@@ -167,6 +167,8 @@ gimp_SOURCES = \
 	global_edit.c		\
 	global_edit.h		\
 	gradient.c		\
+	gradient_header.h	\
+	gradient_select.c	\
 	gradient.h		\
 	gximage.c		\
 	gximage.h		\

app/gradient_header.h

+/* The GIMP -- an image manipulation program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __GRADIENT_HEADER_H__
+#define __GRADIENT_HEADER_H__
+
+#define GRAD_LIST_WIDTH  300
+#define GRAD_LIST_HEIGHT 80
+
+#define GRAD_SCROLLBAR_STEP_SIZE 0.05
+#define GRAD_SCROLLBAR_PAGE_SIZE 0.75
+
+#define GRAD_CLOSE_BUTTON_WIDTH 45
+#define GRAD_PREVIEW_WIDTH      600
+#define GRAD_PREVIEW_HEIGHT     64
+#define GRAD_CONTROL_HEIGHT     10
+
+#define GRAD_CHECK_SIZE 8
+#define GRAD_CHECK_SIZE_SM 4
+
+#define GRAD_CHECK_DARK  (1.0 / 3.0)
+#define GRAD_CHECK_LIGHT (2.0 / 3.0)
+
+#define GRAD_COLOR_BOX_WIDTH  24
+#define GRAD_COLOR_BOX_HEIGHT 16
+
+#define GRAD_NUM_COLORS 10
+
+#define GRAD_MOVE_TIME 150 /* ms between mouse click and detection of movement in gradient control */
+
+#define GRAD_PREVIEW_EVENT_MASK (GDK_EXPOSURE_MASK | GDK_LEAVE_NOTIFY_MASK | \
+				 GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | \
+				 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK)
+
+#define GRAD_CONTROL_EVENT_MASK (GDK_EXPOSURE_MASK |		\
+				 GDK_LEAVE_NOTIFY_MASK |	\
+				 GDK_POINTER_MOTION_MASK |	\
+				 GDK_POINTER_MOTION_HINT_MASK |	\
+				 GDK_BUTTON_PRESS_MASK |	\
+				 GDK_BUTTON_RELEASE_MASK |	\
+				 GDK_BUTTON1_MOTION_MASK)
+
+#define GRAD_UPDATE_PREVIEW   0x0001
+#define GRAD_UPDATE_CONTROL   0x0002
+#define GRAD_RESET_CONTROL    0X0004
+
+
+/***** Types *****/
+
+/* Gradient segment type */
+
+typedef enum {
+	GRAD_LINEAR = 0,
+	GRAD_CURVED,
+	GRAD_SINE,
+	GRAD_SPHERE_INCREASING,
+	GRAD_SPHERE_DECREASING
+} grad_type_t;
+
+typedef enum {
+	GRAD_RGB = 0,  /* normal RGB */
+	GRAD_HSV_CCW,  /* counterclockwise hue */
+	GRAD_HSV_CW    /* clockwise hue */
+} grad_color_t;
+
+typedef struct _grad_segment_t {
+	double       left, middle, right; /* Left pos, midpoint, right pos */
+	double       r0, g0, b0, a0;   	/* Left color */
+	double       r1, g1, b1, a1;   	/* Right color */
+	grad_type_t  type;             	/* Segment's blending function */
+	grad_color_t color;             /* Segment's coloring type */
+
+	struct _grad_segment_t *prev, *next; /* For linked list of segments */
+} grad_segment_t;
+
+
+/* Complete gradient type */
+
+typedef struct _gradient_t {
+	char           *name;
+	grad_segment_t *segments;
+	grad_segment_t *last_visited;
+	int             dirty;
+	char           *filename;
+        GdkPixmap      *pixmap;
+} gradient_t;
+
+
+/* Gradient editor type */
+
+typedef enum {
+	GRAD_DRAG_NONE = 0,
+	GRAD_DRAG_LEFT,
+	GRAD_DRAG_MIDDLE,
+	GRAD_DRAG_ALL
+} control_drag_mode_t;
+
+typedef struct {
+	GtkWidget *shell;
+        GdkGC *gc;
+	GtkWidget *hint_label;
+	GtkWidget *clist;
+	GtkWidget *scrollbar;
+	GtkWidget *preview;
+	GtkWidget *control;
+
+	/* Zoom and scrollbar */
+
+	unsigned int  zoom_factor;
+	GtkObject    *scroll_data;
+
+	/* Instant update */
+
+	int instant_update;
+
+	/* Gradient preview */
+
+	guchar   *preview_rows[2]; /* For caching redraw info */
+	gint      preview_last_x;
+	int       preview_button_down;
+
+	/* Gradient control */
+
+	GdkPixmap      	    *control_pixmap;
+	grad_segment_t 	    *control_drag_segment;   /* Segment which is being dragged */
+	grad_segment_t 	    *control_sel_l;          /* Left segment of selection */
+	grad_segment_t 	    *control_sel_r;          /* Right segment of selection */
+	control_drag_mode_t  control_drag_mode;      /* What is being dragged? */
+	guint32              control_click_time;     /* Time when mouse was pressed */
+	int                  control_compress;       /* Compressing/expanding handles */
+	gint                 control_last_x;         /* Last mouse position when dragging */
+	double               control_last_gx;        /* Last position (wrt gradient) when dragging */
+	double               control_orig_pos;       /* Original click position when dragging */
+
+	GtkWidget           *control_main_popup;              /* Popup menu */
+	GtkWidget           *control_blending_label;          /* Blending function label */
+	GtkWidget           *control_coloring_label;          /* Coloring type label */
+	GtkWidget           *control_splitm_label;            /* Split at midpoint label */
+	GtkWidget           *control_splitu_label;            /* Split uniformly label */
+	GtkWidget           *control_delete_menu_item;        /* Delete menu item */
+	GtkWidget           *control_delete_label;            /* Delete label */
+	GtkWidget           *control_recenter_label;          /* Re-center label */
+	GtkWidget           *control_redistribute_label;      /* Re-distribute label */
+	GtkWidget           *control_flip_label;              /* Flip label */
+	GtkWidget           *control_replicate_label;         /* Replicate label */
+	GtkWidget           *control_blend_colors_menu_item;  /* Blend colors menu item */
+	GtkWidget           *control_blend_opacity_menu_item; /* Blend opacity menu item */
+	GtkWidget           *control_left_load_popup;         /* Left endpoint load menu */
+	GtkWidget           *control_left_save_popup;         /* Left endpoint save menu */
+	GtkWidget           *control_right_load_popup;        /* Right endpoint load menu */
+	GtkWidget           *control_right_save_popup;        /* Right endpoint save menu */
+	GtkWidget           *control_blending_popup;          /* Blending function menu */
+	GtkWidget           *control_coloring_popup;          /* Coloring type menu */
+	GtkWidget           *control_sel_ops_popup;           /* Selection ops menu */
+
+        GtkAccelGroup *accel_group;
+
+	/* Blending and coloring menus */
+
+	GtkWidget *control_blending_items[5 + 1]; /* Add 1 for the "Varies" item */
+	GtkWidget *control_coloring_items[3 + 1];
+
+	/* Split uniformly dialog */
+
+	int split_parts;
+
+	/* Replicate dialog */
+
+	int replicate_times;
+
+	/* Saved colors */
+
+	struct {
+		double r, g, b, a;
+	} saved_colors[GRAD_NUM_COLORS];
+
+	GtkWidget *left_load_color_boxes[GRAD_NUM_COLORS + 3];
+	GtkWidget *left_load_labels[GRAD_NUM_COLORS + 3];
+
+	GtkWidget *left_save_color_boxes[GRAD_NUM_COLORS];
+	GtkWidget *left_save_labels[GRAD_NUM_COLORS];
+
+	GtkWidget *right_load_color_boxes[GRAD_NUM_COLORS + 3];
+	GtkWidget *right_load_labels[GRAD_NUM_COLORS + 3];
+
+	GtkWidget *right_save_color_boxes[GRAD_NUM_COLORS];
+	GtkWidget *right_save_labels[GRAD_NUM_COLORS];
+
+	/* Color dialogs */
+
+	GtkWidget      *left_color_preview;
+	grad_segment_t *left_saved_segments;
+	int             left_saved_dirty;
+
+	GtkWidget      *right_color_preview;
+	grad_segment_t *right_saved_segments;
+	int             right_saved_dirty;
+} gradient_editor_t;
+
+/* Selection dialog functions */
+void sel_update_dialogs(gint row, gradient_t *grad);
+void grad_sel_free_all();
+void grad_sel_refill_all();
+void grad_sel_rename_all(gint n, gradient_t *grad);
+void grad_sel_new_all(gint n, gradient_t *grad);
+void grad_sel_copy_all(gint n, gradient_t *grad);
+void grad_sel_delete_all(gint n);
+void grad_create_gradient_editor_init(gint need_show);
+void ed_insert_in_gradients_listbox(GdkGC *, GtkWidget *,gradient_t *grad, int pos, int select);
+gint grad_set_grad_to_name(gchar *name);
+gint ed_set_list_of_gradients(GdkGC *, GtkWidget *,gradient_t *);
+
+/* Varibles used */
+extern gradient_t *curr_gradient; /* The active gradient */
+extern GSList     *gradients_list; /* The list of gradients */
+extern gradient_t *grad_default_gradient;
+extern gradient_editor_t *g_editor; /* The gradient editor */
+
+#endif  /*  __GRADIENT_HEADER_H__  */