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Diffstat (limited to 'apps/plugins/text_viewer/tv_display.c')
-rw-r--r--apps/plugins/text_viewer/tv_display.c344
1 files changed, 344 insertions, 0 deletions
diff --git a/apps/plugins/text_viewer/tv_display.c b/apps/plugins/text_viewer/tv_display.c
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index 0000000000..78b5b4b074
--- /dev/null
+++ b/apps/plugins/text_viewer/tv_display.c
@@ -0,0 +1,344 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Yoshihisa Uchida
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "tv_display.h"
+#include "tv_preferences.h"
+
+/*
+ * display layout
+ *
+ * when is defined HAVE_LCD_BITMAP
+ * +-------------------------+
+ * |statusbar (1) |
+ * +-------------------------+
+ * |filename (2) |
+ * +---+---------------------+
+ * |s | |
+ * |c | |
+ * |r | draw area |
+ * |o | |
+ * |l | |
+ * |l | |
+ * |b | |
+ * |a | |
+ * |r | |
+ * |(3)| |
+ * +---+---------------------+
+ * | |scrollbar (4) |
+ * +---+---------------------+
+ * |page (5) |
+ * +-------------------------+
+ * |statusbar (6) |
+ * +-------------------------+
+ *
+ * (1) displays when rb->global_settings->statusbar == STATUSBAR_TOP
+ * and preferences->header_mode is HD_SBAR or HD_BOTH.
+ * (2) displays when preferences->header_mode is HD_PATH or HD_BOTH.
+ * (3) displays when preferences->vertical_scrollbar is SB_ON.
+ * (4) displays when preferences->horizontal_scrollbar is SB_ON.
+ * (5) displays when preferences->footer_mode is FT_PAGE or FT_BOTH.
+ * (6) displays when rb->global_settings->statusbar == STATUSBAR_BOTTOM
+ * and preferences->footer_mode is FT_SBAR or FT_BOTH.
+ *
+ *
+ * when isn't defined HAVE_LCD_BITMAP
+ * +---+---------------------+
+ * | | |
+ * |(7)| draw area |
+ * | | |
+ * +---+---------------------+
+ * (7) bookmark
+ */
+
+#define TV_SCROLLBAR_WIDTH rb->global_settings->scrollbar_width
+#define TV_SCROLLBAR_HEIGHT 4
+
+#ifndef HAVE_LCD_BITMAP
+#define TV_BOOKMARK_ICON 0xe101
+#endif
+
+struct tv_rect {
+ int x;
+ int y;
+ int w;
+ int h;
+};
+
+static struct viewport vp_info;
+static bool is_initialized_vp = false;
+
+#ifdef HAVE_LCD_BITMAP
+static int drawmode = DRMODE_SOLID;
+static int totalsize;
+static bool show_vertical_scrollbar;
+#endif
+
+static struct screen* display;
+
+/* layout */
+#ifdef HAVE_LCD_BITMAP
+static struct tv_rect header;
+static struct tv_rect footer;
+static struct tv_rect horizontal_scrollbar;
+static struct tv_rect vertical_scrollbar;
+#else
+static struct tv_rect bookmark;
+#endif
+static struct tv_rect drawarea;
+
+static int display_columns;
+static int display_rows;
+
+static int col_width;
+static int row_height;
+
+#ifdef HAVE_LCD_BITMAP
+
+void tv_show_header(void)
+{
+ unsigned header_mode = header_mode;
+
+ if (preferences->header_mode == HD_PATH || preferences->header_mode == HD_BOTH)
+ display->putsxy(header.x, header.y, preferences->file_name);
+}
+
+void tv_show_footer(const struct tv_screen_pos *pos)
+{
+ unsigned char buf[12];
+ unsigned footer_mode = preferences->footer_mode;
+
+ if (footer_mode == FT_PAGE || footer_mode == FT_BOTH)
+ {
+ if (pos->line == 0)
+ rb->snprintf(buf, sizeof(buf), "%d", pos->page + 1);
+ else
+ rb->snprintf(buf, sizeof(buf), "%d - %d", pos->page + 1, pos->page + 2);
+ display->putsxy(footer.x, footer.y, buf);
+ }
+}
+
+void tv_init_scrollbar(off_t total, bool show_scrollbar)
+{
+ totalsize = total;
+ show_vertical_scrollbar = show_scrollbar;
+}
+
+void tv_show_scrollbar(int window, int col, off_t cur_pos, int size)
+{
+ int items;
+ int min_shown;
+ int max_shown;
+
+ if (preferences->horizontal_scrollbar)
+ {
+ items = preferences->windows * display_columns;
+ min_shown = window * display_columns + col;
+ max_shown = min_shown + display_columns;
+
+ rb->gui_scrollbar_draw(display,
+ horizontal_scrollbar.x, horizontal_scrollbar.y,
+ horizontal_scrollbar.w, TV_SCROLLBAR_HEIGHT,
+ items, min_shown, max_shown, HORIZONTAL);
+ }
+
+ if (show_vertical_scrollbar)
+ {
+ items = (int) totalsize;
+ min_shown = (int) cur_pos;
+ max_shown = min_shown + size;
+
+ rb->gui_scrollbar_draw(display,
+ vertical_scrollbar.x, vertical_scrollbar.y,
+ TV_SCROLLBAR_WIDTH-1, vertical_scrollbar.h,
+ items, min_shown, max_shown, VERTICAL);
+ }
+}
+
+void tv_fillrect(int col, int row, int rows)
+{
+ display->fillrect(drawarea.x + col * col_width, drawarea.y + row * row_height,
+ drawarea.w - col * col_width, rows * row_height);
+}
+
+void tv_set_drawmode(int mode)
+{
+ rb->lcd_set_drawmode(mode);
+}
+
+#endif
+
+void tv_draw_text(int row, const unsigned char *text, int offset)
+{
+ int xpos = -offset * col_width;
+ int text_width;
+
+ if (row < 0 || row >= display_rows)
+ return;
+
+ if (preferences->alignment == AL_RIGHT)
+ {
+ display->getstringsize(text, &text_width, NULL);
+ xpos += ((offset > 0)? drawarea.w * 2 : drawarea.w) - text_width;
+ }
+
+#ifdef HAVE_LCD_BITMAP
+ display->putsxy(drawarea.x + xpos, drawarea.y + row * row_height, text);
+#else
+ display->puts(drawarea.x + xpos, drawarea.y + row, text);
+#endif
+}
+
+#ifndef HAVE_LCD_BITMAP
+void tv_put_bookmark_icon(int row)
+{
+ display->putchar(bookmark.x, drawarea.y + row, TV_BOOKMARK_ICON);
+}
+#endif
+
+void tv_init_display(void)
+{
+ display = rb->screens[SCREEN_MAIN];
+ display->clear_viewport();
+}
+
+void tv_start_display(void)
+{
+ display->set_viewport(&vp_info);
+#ifdef HAVE_LCD_BITMAP
+ drawmode = rb->lcd_get_drawmode();
+#endif
+}
+
+void tv_end_display(void)
+{
+#ifdef HAVE_LCD_BITMAP
+ rb->lcd_set_drawmode(drawmode);
+#endif
+ display->set_viewport(NULL);
+}
+
+void tv_clear_display(void)
+{
+ display->clear_viewport();
+}
+
+void tv_update_display(void)
+{
+ display->update_viewport();
+}
+
+#ifdef HAVE_LCD_BITMAP
+void tv_set_layout(int col_w, bool show_scrollbar)
+#else
+void tv_set_layout(int col_w)
+#endif
+{
+#ifdef HAVE_LCD_BITMAP
+ int scrollbar_width = (show_scrollbar)? TV_SCROLLBAR_WIDTH : 0;
+ int scrollbar_height = (preferences->horizontal_scrollbar)? TV_SCROLLBAR_HEIGHT : 0;
+ unsigned header_mode = preferences->header_mode;
+ unsigned footer_mode = preferences->footer_mode;
+
+ row_height = preferences->font->height;
+
+ header.x = 0;
+ header.y = 0;
+ header.w = vp_info.width;
+ header.h = (header_mode == HD_PATH || header_mode == HD_BOTH)? row_height : 0;
+
+ footer.x = 0;
+ footer.w = vp_info.width;
+ footer.h = (footer_mode == FT_PAGE || footer_mode == FT_BOTH)? row_height : 0;
+ footer.y = vp_info.height - footer.h;
+
+ drawarea.x = scrollbar_width;
+ drawarea.y = header.y + header.h;
+ drawarea.w = vp_info.width - scrollbar_width;
+ drawarea.h = footer.y - drawarea.y - scrollbar_height;
+
+ horizontal_scrollbar.x = drawarea.x;
+ horizontal_scrollbar.y = footer.y - scrollbar_height;
+ horizontal_scrollbar.w = drawarea.w;
+ horizontal_scrollbar.h = scrollbar_height;
+
+ vertical_scrollbar.x = 0;
+ vertical_scrollbar.y = drawarea.y;
+ vertical_scrollbar.w = scrollbar_width;
+ vertical_scrollbar.h = drawarea.h;
+#else
+ row_height = 1;
+
+ bookmark.x = 0;
+ bookmark.y = 0;
+ bookmark.w = 1;
+ bookmark.h = vp_info.height;
+
+ drawarea.x = 1;
+ drawarea.y = 0;
+ drawarea.w = vp_info.width - 1;
+ drawarea.h = vp_info.height;
+#endif
+ col_width = col_w;
+
+ display_columns = drawarea.w / col_width;
+ display_rows = drawarea.h / row_height;
+}
+
+void tv_get_drawarea_info(int *width, int *cols, int *rows)
+{
+ *width = drawarea.w;
+ *cols = display_columns;
+ *rows = display_rows;
+}
+
+void tv_change_viewport(void)
+{
+#ifdef HAVE_LCD_BITMAP
+ struct viewport vp;
+ bool show_statusbar = (preferences->header_mode == HD_SBAR ||
+ preferences->header_mode == HD_BOTH ||
+ preferences->footer_mode == FT_SBAR ||
+ preferences->footer_mode == FT_BOTH);
+
+ if (is_initialized_vp)
+ tv_undo_viewport();
+ else
+ is_initialized_vp = true;
+
+ rb->viewportmanager_theme_enable(SCREEN_MAIN, show_statusbar, &vp);
+ vp_info = vp;
+ vp_info.flags &= ~VP_FLAG_ALIGNMENT_MASK;
+
+#else
+ if (!is_initialized_vp)
+ {
+ rb->viewport_set_defaults(&vp_info, SCREEN_MAIN);
+ is_initialized_vp = true;
+ }
+#endif
+}
+
+void tv_undo_viewport(void)
+{
+#ifdef HAVE_LCD_BITMAP
+ if (is_initialized_vp)
+ rb->viewportmanager_theme_undo(SCREEN_MAIN, false);
+#endif
+}
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