diff options
Diffstat (limited to 'app/wlib/gtklib/gtktext.c')
| -rw-r--r-- | app/wlib/gtklib/gtktext.c | 308 |
1 files changed, 227 insertions, 81 deletions
diff --git a/app/wlib/gtklib/gtktext.c b/app/wlib/gtklib/gtktext.c index 8da31d3..e067f43 100644 --- a/app/wlib/gtklib/gtktext.c +++ b/app/wlib/gtklib/gtktext.c @@ -1,5 +1,5 @@ /** \file gtktext.c - * Multi line text entry + * Multi-line Text Boxes */ /* XTrkCad - Model Railroad CAD @@ -24,7 +24,8 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> - +#include <math.h> +#include "i18n.h" #include "gtkint.h" /* @@ -32,13 +33,18 @@ */ #define USE_TEXTVIEW -/* - ***************************************************************************** - * - * Multi-line Text Boxes - * - ***************************************************************************** - */ + +struct PrintData { + wText_p tb; + gint lines_per_page; + gdouble font_size; + gchar **lines; + gint total_lines; + gint total_pages; +}; + +#define HEADER_HEIGHT 20.0 +#define HEADER_GAP 8.5 struct wText_t { WOBJ_COMMON @@ -69,16 +75,6 @@ EXPORT void wTextClear( bt->changed = FALSE; } -/** - * Add text to a multiline text field. Font is selected as requested. - * Bold is supported if the flags BT_BOLD is set as flags for the entry - * field. For bold, pango text markup is used - * - * - * \param bt IN the text field - * \param text IN text to add - */ - EXPORT void wTextAppend( wText_p bt, const char * text ) @@ -86,7 +82,6 @@ EXPORT void wTextAppend( #ifdef USE_TEXTVIEW GtkTextBuffer * tb; GtkTextIter ti1, ti2; -// PangoFontDescription *pfd; #else static GdkFont * fixedRegularFont = NULL; static GdkFont * fixedBoldFont = NULL; @@ -102,14 +97,6 @@ EXPORT void wTextAppend( if (bt->text == 0) abort(); #ifdef USE_TEXTVIEW tb = gtk_text_view_get_buffer( GTK_TEXT_VIEW(bt->text) ); - //if ((bt->option&BT_FIXEDFONT)) { - ///* creating PangoFontDescription from string, specified in entry */ - //pfd = pango_font_description_from_string("Monospace"); - ///* setting label's font */ - //gtk_widget_modify_font(GTK_WIDGET(tb), pfd); - ///* freeing PangoFontDescription, cause it has been copied by prev. call */ - //pango_font_description_free(pfd); - //} #else if ((bt->option&BT_FIXEDFONT)) { if (fixedRegularFont==NULL) @@ -251,42 +238,224 @@ EXPORT wBool_t wTextSave( fclose(f); return TRUE; } +/** + * Begin the printing by retrieving the contents of the text box and + * count the lines of text. + * + * \param operation IN the GTK print operation + * \param context IN print context + * \param pd IN data structure for user data + * + */ + +static void +begin_print (GtkPrintOperation *operation, + GtkPrintContext *context, + struct PrintData *pd) +{ + gchar *contents; + gdouble height; + + contents = gtkGetText( pd->tb ); + pd->lines = g_strsplit (contents, "\n", 0); + + /* Count the total number of lines in the file. */ + /* ignore the header lines */ + pd->total_lines = 6; + while (pd->lines[pd->total_lines] != NULL) + pd->total_lines++; + + /* Based on the height of the page and font size, calculate how many lines can be + * rendered on a single page. A padding of 3 is placed between lines as well. + * Space for page header, table header and footer lines is subtracted from the total size + */ + height = gtk_print_context_get_height (context) - (pd->font_size + 3) - 2 * ( HEADER_HEIGHT + HEADER_GAP ); + pd->lines_per_page = floor (height / (pd->font_size + 3)); + pd->total_pages = (pd->total_lines - 1) / pd->lines_per_page + 1; + gtk_print_operation_set_n_pages (operation, pd->total_pages); + + free( contents ); +} +/** + * Draw the page, which includes a header with the file name and page number along + * with one page of text with a font of "Monospace 10". + * + * \param operation IN the GTK print operation + * \param context IN print context + * \param page_nr IN page to print + * \param pd IN data structure for user data + * + * + */ + +static void +draw_page (GtkPrintOperation *operation, + GtkPrintContext *context, + gint page_nr, + struct PrintData *pd ) +{ + cairo_t *cr; + PangoLayout *layout; + gdouble width, text_height, height; + gint line, i, text_width, layout_height; + PangoFontDescription *desc; + gchar *page_str; + + cr = gtk_print_context_get_cairo_context (context); + width = gtk_print_context_get_width (context); + + layout = gtk_print_context_create_pango_layout (context); + desc = pango_font_description_from_string ("Monospace"); + pango_font_description_set_size (desc, pd->font_size * PANGO_SCALE); + + /* + * render the header line with document type parts list on left and + * first line of layout title on right + */ + + pango_layout_set_font_description (layout, desc); + pango_layout_set_text (layout, pd->lines[ 0 ], -1); // document type + pango_layout_set_width (layout, -1); + pango_layout_set_alignment (layout, PANGO_ALIGN_LEFT); + pango_layout_get_size (layout, NULL, &layout_height); + text_height = (gdouble) layout_height / PANGO_SCALE; + + cairo_move_to (cr, 0, (HEADER_HEIGHT - text_height) / 2); + pango_cairo_show_layout (cr, layout); + + pango_layout_set_text (layout, pd->lines[ 2 ], -1); // layout title + pango_layout_get_size (layout, &text_width, NULL); + pango_layout_set_alignment (layout, PANGO_ALIGN_RIGHT); + + cairo_move_to (cr, width - (text_width / PANGO_SCALE), + (HEADER_HEIGHT - text_height) / 2); + pango_cairo_show_layout (cr, layout); + + /* Render the column header */ + cairo_move_to (cr, 0, HEADER_HEIGHT + HEADER_GAP + pd->font_size + 3 ); + pango_layout_set_text (layout, pd->lines[ 6 ], -1); + pango_cairo_show_layout (cr, layout); + cairo_rel_move_to (cr, 0, pd->font_size + 3 ); + pango_layout_set_text (layout, pd->lines[ 7 ], -1); + pango_cairo_show_layout (cr, layout); + + /* Render the page text with the specified font and size. */ + cairo_rel_move_to (cr, 0, pd->font_size + 3 ); + line = page_nr * pd->lines_per_page + 8; + for (i = 0; i < pd->lines_per_page && line < pd->total_lines; i++) + { + pango_layout_set_text (layout, pd->lines[line], -1); + pango_cairo_show_layout (cr, layout); + cairo_rel_move_to (cr, 0, pd->font_size + 3); + line++; + } + + /* + * Render the footer line with date on the left and page number + * on the right + */ + pango_layout_set_text (layout, pd->lines[ 5 ], -1); // date + pango_layout_set_width (layout, -1); + pango_layout_set_alignment (layout, PANGO_ALIGN_LEFT); + pango_layout_get_size (layout, NULL, &layout_height); + text_height = (gdouble) layout_height / PANGO_SCALE; + + height = gtk_print_context_get_height (context); + cairo_move_to (cr, 0, height - ((HEADER_HEIGHT - text_height) / 2)); + pango_cairo_show_layout (cr, layout); + + page_str = g_strdup_printf (_("%d of %d"), page_nr + 1, pd->total_pages); // page number + pango_layout_set_text( layout, page_str, -1 ); + pango_layout_get_size (layout, &text_width, NULL); + pango_layout_set_alignment (layout, PANGO_ALIGN_RIGHT); + + cairo_move_to (cr, width - (text_width / PANGO_SCALE), + height - ((HEADER_HEIGHT - text_height) / 2)); + pango_cairo_show_layout (cr, layout); + + g_free (page_str); + g_object_unref (layout); + pango_font_description_free (desc); +} + +/** + * Clean up after the printing operation since it is done. + * + * \param operation IN the GTK print operation + * \param context IN print context + * \param pd IN data structure for user data + * + * + */ +static void +end_print (GtkPrintOperation *operation, + GtkPrintContext *context, + struct PrintData *pd) +{ + g_strfreev (pd->lines); + free( pd ); +} + +/** + * Print the content of a multi line text box. This function is only used + * for printing the parts list. So it makes some assumptions on the structure + * and the content. Change if the multi line entry is changed. + * The deprecated gtk_text is not supported by this function. + * + * Thanks to Andrew Krause's book for a good starting point. + * + * \param bt IN the text field + * \return TRUE on success, FALSE on error + */ EXPORT wBool_t wTextPrint( wText_p bt ) { - wPrinterStream_p f; -#ifndef USE_TEXTVIEW - int siz, pos, cnt; -#endif - char * cp; - - f = wPrinterOpen(); - if (f==NULL) { - return FALSE; + GtkPrintOperation *operation; + GtkWidget *dialog; + GError *error = NULL; + gint res; + struct PrintData *data; + + /* Create a new print operation, applying saved print settings if they exist. */ + operation = gtk_print_operation_new (); + WlibApplySettings( operation ); + + data = malloc(sizeof( struct PrintData)); + data->font_size = 10.0; + data->tb = bt; + + g_signal_connect (G_OBJECT (operation), "begin_print", + G_CALLBACK (begin_print), (gpointer) data); + g_signal_connect (G_OBJECT (operation), "draw_page", + G_CALLBACK (draw_page), (gpointer) data); + g_signal_connect (G_OBJECT (operation), "end_print", + G_CALLBACK (end_print), (gpointer) data); + + /* Run the default print operation that will print the selected file. */ + res = gtk_print_operation_run (operation, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG, + GTK_WINDOW(gtkMainW->gtkwin), &error); + + /* If the print operation was accepted, save the new print settings. */ + if (res == GTK_PRINT_OPERATION_RESULT_APPLY) + { + WlibSaveSettings( operation ); } -#ifdef USE_TEXTVIEW - cp = gtkGetText( bt ); - wPrinterWrite( f, cp, strlen(cp) ); - free(cp); - -#else - siz = gtk_text_get_length( GTK_TEXT(bt->text) ); - pos = 0; - cnt = BUFSIZ; - while (pos<siz) { - if (pos+cnt>siz) - cnt = siz-pos; - cp = gtk_editable_get_chars( GTK_EDITABLE(bt->text), pos, pos+cnt ); - if (cp == NULL) - break; - wPrinterWrite( f, cp, cnt ); - free(cp); - pos += cnt; + /* Otherwise, report that the print operation has failed. */ + else if (error) + { + dialog = gtk_message_dialog_new (GTK_WINDOW (gtkMainW->gtkwin), + GTK_DIALOG_DESTROY_WITH_PARENT, + GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, + error->message); + + g_error_free (error); + gtk_dialog_run (GTK_DIALOG (dialog)); + gtk_widget_destroy (dialog); } -#endif - wPrinterClose(f); + g_object_unref (operation); + return TRUE; } @@ -402,21 +571,7 @@ static void textChanged( bt->changed = TRUE; } -/** - * Create a multi line text entry widget. The created widget is - * configured as requested by the BT_* flags. This includes Monospaced - * font for BT_FIXEDFONT, readonly for BT_READONLY and a markup for - * bold when setup via BT_BOLD. - * - * \param parent IN parent window - * \param x,y IN position - * \param helpstr IN label for linking into help system - * \param labelStr IN label - * \param option IN widget options - * \param width, height IN size of widget - * \return handle for new widget - */ - + EXPORT wText_p wTextCreate( wWin_p parent, wPos_t x, @@ -430,7 +585,6 @@ EXPORT wText_p wTextCreate( wText_p bt; #ifdef USE_TEXTVIEW GtkTextBuffer * tb; - PangoFontDescription *pfd; #else GtkRequisition requisition; #endif @@ -453,14 +607,6 @@ EXPORT wText_p wTextCreate( gtk_text_buffer_create_tag( tb, "bold", "weight", PANGO_WEIGHT_BOLD, NULL); /* gtk_text_buffer_create_tag( tb, "italic", "style", PANGO_STYLE_ITALIC, NULL); */ /* gtk_text_buffer_create_tag( tb, "bolditalic", "weight", PANGO_WEIGHT_BOLD, "style", PANGO_STYLE_ITALIC, NULL); */ - if ((bt->option & BT_FIXEDFONT)) { - /* creating PangoFontDescription from string, specified in entry */ - pfd = pango_font_description_from_string("Monospace"); - /* setting label's font */ - gtk_widget_modify_font(GTK_WIDGET(bt->text), pfd); - /* freeing PangoFontDescription, cause it has been copied by prev. call */ - pango_font_description_free(pfd); - } bt->vscroll = gtk_vscrollbar_new( GTK_TEXT_VIEW(bt->text)->vadjustment ); if (bt->vscroll == 0) abort(); #else |