#ifndef lint #ifdef sccs static char sccsid[] = "@(#)fc_layout.c 1.15 93/06/28"; #endif #endif /* * (c) Copyright 1989 Sun Microsystems, Inc. Sun design patents * pending in the U.S. and foreign countries. See LEGAL_NOTICE * file for terms of the license. */ #include #include #include #include #include #include static void fc_calc_xs(); static int fc_calc_ys(); static int fc_calc_ys_top_down(); static int fc_calc_ys_bottom_up(); static int fc_recalc_ys(); static int fc_calc_min_width(); static int fc_calc_min_height(); static int fc_calc_default_width(); static int fc_calc_default_height(); /* * Substitute for xv_rows/xv_cols, since they may do xv_get * on FONT_DEFAULT_CHAR_WIDTH/HEIGHT on each call. */ #define COLS(num) (private->col_width * (num)) #define ROWS(num) ((int)(private->row_height * (num))) /* * Calculate and set X positions and widths */ static void fc_calc_xs( private, exten_rect ) Fc_private *private; Rect *exten_rect; { Rect *tmp; int pix_width; int x_pos; int value_x; int item_x; int label_right; Scrollbar sb; int sb_width; pix_width = private->rect.r_width; /* initialize X values for extension rect */ exten_rect->r_width = pix_width; exten_rect->r_left = 0; /* * Goto button is left-aligned on the second column. */ xv_set(private->ui.goto_msg, XV_X, COLS(2), PANEL_PAINT, PANEL_NONE, NULL); xv_set(private->ui.goto_btn, XV_X, COLS(2), PANEL_PAINT, PANEL_NONE, NULL); /* * Put Goto Textfield 1 Column after Goto Button. * Use all remaining width, shy 2 columns. Also, * even without a label, it puts a bit of space * beteeen the label and value rects; so we have * to account for it when calculating width. */ tmp = (Rect *)xv_get(private->ui.goto_btn, XV_RECT); x_pos = rect_right(tmp) + COLS(1); item_x = (int)xv_get(private->ui.goto_txt, XV_X); value_x = (int)xv_get(private->ui.goto_txt, PANEL_VALUE_X); xv_set(private->ui.goto_txt, XV_X, x_pos, PANEL_VALUE_DISPLAY_WIDTH, pix_width - x_pos - (value_x - item_x) - COLS(2), PANEL_PAINT, PANEL_NONE, NULL); /* * Place Folder Textfield. */ x_pos = COLS(4); xv_set(private->ui.folder_txt, XV_X, x_pos, PANEL_VALUE_DISPLAY_WIDTH, pix_width - x_pos - COLS(2), PANEL_PAINT, PANEL_NONE, NULL); /* * Place select message. Should line up with File List * BUG: PANEL_MESSAGE seems to ignore the label and item * widths... */ xv_set(private->ui.select_msg, XV_X, COLS(4), PANEL_LABEL_WIDTH, pix_width - (int)xv_get(private->ui.select_msg, PANEL_LABEL_X) - COLS(4), PANEL_PAINT, PANEL_NONE, NULL); /* * Place File List centered, 4 cols on either side. Note * that PANEL_LIST_WIDTH does not inlcude scrollbar width. */ x_pos = COLS(4); sb = (Scrollbar) xv_get(private->ui.list, PANEL_LIST_SCROLLBAR); sb_width = (int) xv_get(sb, XV_WIDTH); xv_set(private->ui.list, XV_X, x_pos, PANEL_LIST_WIDTH, pix_width - x_pos - sb_width - COLS(4), PANEL_PAINT, PANEL_NONE, NULL); /* * Place document left-aligned with Goto Button. * Note: there is no doc typein for Open dialog. */ if ( private->ui.document_txt ) { item_x = (int)xv_get(private->ui.document_txt, XV_X); value_x = (int)xv_get(private->ui.document_txt, PANEL_VALUE_X); x_pos = COLS(2); xv_set(private->ui.document_txt, XV_X, x_pos, PANEL_VALUE_DISPLAY_WIDTH, pix_width - x_pos - (value_x - item_x) - COLS(2), PANEL_PAINT, PANEL_NONE, NULL); } /* * Center the Open, Cancel and Save buttons */ { int open_width = (int)xv_get(private->ui.open_btn, XV_WIDTH); int cancel_width = (int)xv_get(private->ui.cancel_btn, XV_WIDTH); int other_width = 0; Panel_item other_btn = XV_NULL; if ( private->type != FILE_CHOOSER_OPEN ) other_btn = private->ui.save_btn; else if ( private->custom ) other_btn = private->ui.custom_btn; if ( other_btn ) other_width = (int)xv_get(other_btn, XV_WIDTH) + COLS(2); x_pos = (pix_width - (open_width + cancel_width + other_width + COLS(2)) ) / 2; xv_set(private->ui.open_btn, XV_X, x_pos, PANEL_PAINT, PANEL_NONE, NULL); x_pos += open_width + COLS(2); xv_set(private->ui.cancel_btn, XV_X, x_pos, PANEL_PAINT, PANEL_NONE, NULL); if ( other_btn ) { x_pos += cancel_width + COLS(2); xv_set( other_btn, XV_X, x_pos, PANEL_PAINT, PANEL_NONE, NULL ); } } } /* fc_calc_xs() */ /* * Calcualte Y positions for top half of dialog, down * to the File List. */ static int fc_calc_ys_top_down( private ) Fc_private *private; { int y_pos; xv_set(private->ui.goto_msg, XV_Y, ROWS(.5), PANEL_PAINT, PANEL_NONE, NULL); xv_set(private->ui.goto_btn, XV_Y, ROWS(1.5), PANEL_PAINT, PANEL_NONE, NULL); xv_set(private->ui.goto_txt, XV_Y, ROWS(1.5), PANEL_PAINT, PANEL_NONE, NULL); xv_set(private->ui.folder_txt, XV_Y, ROWS(3.5), PANEL_PAINT, PANEL_NONE, NULL); xv_set(private->ui.select_msg, XV_Y, ROWS(6), PANEL_PAINT, PANEL_NONE, NULL); /* * Place File List 1 row under Select Msg. Set the minumum * size for now, and use this to calculate the exten area's * max_size. */ xv_set(private->ui.list, XV_Y, ROWS(7), PANEL_LIST_DISPLAY_ROWS, 3, PANEL_PAINT, PANEL_NONE, NULL); return ROWS(7) + (int) xv_get(private->ui.list, XV_HEIGHT); } /* fc_calc_ys_top_down() */ /* * Calculate Y's from bottom of frame up to the File List. * * WARNING: modifications to this code should be reflected in * fc_calc_min_height()! */ static int fc_calc_ys_bottom_up( private ) Fc_private *private; { int y_pos; int pix_height; pix_height = private->rect.r_height; /* * Open, Cancel and Save buttons are 2 rows above the * footer. */ y_pos = pix_height - (int) xv_get(private->ui.open_btn, XV_HEIGHT) - ROWS(1); xv_set(private->ui.open_btn, XV_Y, y_pos, PANEL_PAINT, PANEL_NONE, NULL); xv_set(private->ui.cancel_btn, XV_Y, y_pos, PANEL_PAINT, PANEL_NONE, NULL); if ( private->type != FILE_CHOOSER_OPEN ) xv_set( private->ui.save_btn, XV_Y, y_pos, PANEL_PAINT, PANEL_NONE, NULL ); else if ( private->custom ) xv_set( private->ui.custom_btn, XV_Y, y_pos, PANEL_PAINT, PANEL_NONE, NULL ); y_pos -= ROWS(2); /* 2 rows white-space above buttons */ return y_pos; } /* fc_calc_ys_bottom_up() */ /* * Calc Y's presuming exten_func done. Adjusts File List * to fit into new size. */ static int fc_recalc_ys( private, top, exten_rect ) Fc_private *private; int top; Rect *exten_rect; { int top_of_bottom; int list_row_height; int max_exten; Rect *list_rect; top_of_bottom = fc_calc_ys_bottom_up( private, exten_rect ); list_row_height = (int) xv_get(private->ui.list, PANEL_LIST_ROW_HEIGHT); /* * Account for extension area. */ if ( exten_rect->r_height > 0 ) top_of_bottom -= ROWS(1.5) + exten_rect->r_height; /* * Make up for extra row added to Save dialog size. */ if ( private->type != FILE_CHOOSER_OPEN ) top_of_bottom -= ROWS(1); /* * Update the number of rows displayed in the List according to how * much space is left after the rest of the layout. Note that the 3 * is carried over as the minimum number of rows set in fc_calc_ys_ * top_down(). */ xv_set(private->ui.list, PANEL_LIST_DISPLAY_ROWS, ((top_of_bottom - top) / list_row_height) + 3, PANEL_PAINT, PANEL_NONE, NULL); /* * Do this here to make sure that the document typein is at a * static position below the List, and all the residual SLACK is * taken up in the space between it and the buttons (and exten * area ). */ list_rect = (Rect *) xv_get(private->ui.list, XV_RECT); if ( private->ui.document_txt ) { Rect *doc_rect; /* typein is 1/2 row below the list */ xv_set(private->ui.document_txt, XV_Y, rect_bottom(list_rect) + ROWS(.5), PANEL_PAINT, PANEL_NONE, NULL); doc_rect = (Rect *) xv_get(private->ui.document_txt, XV_RECT); exten_rect->r_top = rect_bottom(doc_rect) + ROWS(1.5); } else { exten_rect->r_top = rect_bottom(list_rect) + ROWS(1.5); } return top_of_bottom; } /* fc_recalc_ys() */ /* * Do complete Y layout. Return the maximum size that the * Extension Rect may expand to. */ static int fc_calc_ys( private, y_anchor, exten_rect ) Fc_private *private; int *y_anchor; Rect *exten_rect; { int max_exten; int top_of_bottom; *y_anchor = fc_calc_ys_top_down( private ); (void) fc_recalc_ys( private, *y_anchor, exten_rect ); /* * Calculate the maximum the exten rect can expand to and * still preserve the layout policy. Also consider the * additional white space perscribed for extension area. */ max_exten = exten_rect->r_top + exten_rect->r_height - *y_anchor - ROWS(1.5); /* area for Save type-in includes 1/2 row white space under list */ if ( private->ui.document_txt ) max_exten -= (int) xv_get(private->ui.document_txt, XV_HEIGHT) + ROWS(.5); return max_exten; } /* fc_calc_ys() */ /* * Do Relative layout of UI objects. See Open Look "Application * File Choosing Human Interface Specification" for engineering * diagrams. * * Called on WIN_RESIZE iff width or height changed. */ Pkg_private void file_chooser_position_objects( private ) Fc_private *private; { int max_height; int y_anchor; Rect exten_rect; exten_rect.r_height = private->exten_height; fc_calc_xs( private, &exten_rect ); max_height = fc_calc_ys( private, &y_anchor, &exten_rect ); /* * Make extension callback and recalc y's to meet the * returned height. */ if ( private->exten_func ) { int right_edge = private->rect.r_width - COLS(2); int new_height; new_height = (* private->exten_func)( FC_PUBLIC(private), private->rect, exten_rect, COLS(2), private->rect.r_width - COLS(2), max_height ); /* * if height changed, redo the y's */ if ( (new_height != -1) && (new_height != exten_rect.r_height) ) { if ( new_height > max_height ) new_height = max_height; exten_rect.r_height = new_height; fc_recalc_ys( private, y_anchor, &exten_rect ); } } /* * Finally, repaint the panel. */ panel_paint(private->ui.panel, PANEL_CLEAR); } /* file_chooser_position_objects() */ /* * The value for min width is not specified, but i calcuated * it here in terms of allowing each of the standard buttons to * remain on the view unobstructed with 1 col left and right. */ static int fc_calc_min_width( private ) Fc_private *private; { int open_width = (int)xv_get(private->ui.open_btn, XV_WIDTH); int cancel_width = (int)xv_get(private->ui.cancel_btn, XV_WIDTH); int other_width = 0; Panel_item other_btn = XV_NULL; int total_width = 0; if ( private->type != FILE_CHOOSER_OPEN ) other_btn = private->ui.save_btn; else if ( private->custom ) other_btn = private->ui.custom_btn; total_width = open_width + COLS(2) + cancel_width; if ( other_btn ) total_width += COLS(2) + (int)xv_get(other_btn, XV_WIDTH); /* 1 column left and right of buttons */ return total_width + COLS(2); } /* fc_calc_min_width() */ /* * Basically, min-height is defined as enough vertical space * for all the stuff, but with the scrolling list at 3 displayed * rows. * * WARNING: This code needs to be kept in sync with the rest of * the code in this file that manages the vertical layout!!! */ static int fc_calc_min_height( private ) Fc_private *private; { int total_height = 0; /* will set list to 3 rows */ total_height = fc_calc_ys_top_down( private ); /* if Save/As dialog, 1/2 row plus typein added */ if ( private->ui.document_txt ) { total_height += ROWS(.5); total_height += (int) xv_get(private->ui.document_txt, XV_HEIGHT); } /* * Spec shows 2 rows above buttons, and 1 below. */ total_height += ROWS(2); total_height += (int) xv_get(private->ui.open_btn, XV_HEIGHT); total_height += ROWS(1); return total_height; } /* fc_calc_min_height() */ /* * Calculate the minimum size of the frame. */ Pkg_private void file_chooser_calc_min_size( private, width, height ) Fc_private *private; int * width; int * height; { *width = fc_calc_min_width( private ); *height = fc_calc_min_height( private ); } /* file_chooser_calc_min_size() */ /* * Default width is... is... is not specified too well... * The attempt here is to use the width of the buttons as * a key to number of columns to default to. This should * be taken up with the OL people at some point. */ static int fc_calc_default_width( private, min_width ) Fc_private *private; int min_width; { int default_width; int help_width; /* * The default width is achieved somewhat unscientifically * by figuring the min width and adding a number of columns * that was figured by the Eyeball Method and the Spec. */ if ( private->ui.custom_btn ) default_width = min_width + COLS(14); else if ( private->type == FILE_CHOOSER_OPEN ) default_width = min_width + COLS(26); else default_width = min_width + COLS(16); /* * Make sure help lines fit all the way in. you'd think * they should be truncated at some point, but user's * don't seem to appreciate this. */ /* goto help line is aligned with button in col 2 */ help_width = (int) xv_get(private->ui.goto_msg, XV_WIDTH) + COLS(4); if ( help_width > default_width ) default_width = help_width; /* Select help line is aligned with the list, not the button, in col 4 */ help_width = (int) xv_get(private->ui.select_msg, XV_WIDTH) + COLS(8); if ( help_width > default_width ) default_width = help_width; return default_width; } /* fc_calc_default_width() */ /* * Default height is calculated by taking the min height * and adding 7 rows to the list. Note that min height is * takes all the vertical sizes and assumes the list is 3 rows * tall, so this is the same thing with a list of 10 rows. */ static int fc_calc_default_height( private, min_height ) Fc_private *private; int min_height; { int row_height = (int) xv_get(private->ui.list, PANEL_LIST_ROW_HEIGHT); return min_height + (7 * row_height); } /* fc_calc_default_height() */ /* * Calculate the default size of the frame. */ Pkg_private void file_chooser_calc_default_size( private, min_width, min_height, width, height ) Fc_private *private; int min_width; int min_height; int * width; int * height; { *width = fc_calc_default_width( private, min_width ); *height = fc_calc_default_height( private, min_height ); } /* file_chooser_calc_default_size() */ /*----------------------------------------------------------------------------*/