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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file textfile_gui.cpp Implementation of textfile window. */
#include "stdafx.h"
#include "fileio_func.h"
#include "fontcache.h"
#include "gfx_type.h"
#include "gfx_func.h"
#include "string_func.h"
#include "textfile_gui.h"
#include "widgets/misc_widget.h"
#include "table/strings.h"
/** Widgets for the textfile window. */
static const NWidgetPart _nested_textfile_widgets[] = {
NWidget(NWID_HORIZONTAL),
NWidget(WWT_CLOSEBOX, COLOUR_MAUVE),
NWidget(WWT_CAPTION, COLOUR_MAUVE, WID_TF_CAPTION), SetDataTip(STR_NULL, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
EndContainer(),
NWidget(NWID_HORIZONTAL),
NWidget(WWT_PANEL, COLOUR_MAUVE, WID_TF_BACKGROUND), SetMinimalSize(200, 125), SetResize(1, 12), SetScrollbar(WID_TF_VSCROLLBAR),
EndContainer(),
NWidget(NWID_VERTICAL),
NWidget(NWID_VSCROLLBAR, COLOUR_MAUVE, WID_TF_VSCROLLBAR),
EndContainer(),
EndContainer(),
NWidget(NWID_HORIZONTAL),
NWidget(NWID_HSCROLLBAR, COLOUR_MAUVE, WID_TF_HSCROLLBAR),
NWidget(WWT_RESIZEBOX, COLOUR_MAUVE),
EndContainer(),
};
/** Window definition for the textfile window */
static const WindowDesc _textfile_desc(
WDP_CENTER, 630, 460,
WC_TEXTFILE, WC_NONE,
WDF_UNCLICK_BUTTONS,
_nested_textfile_widgets, lengthof(_nested_textfile_widgets)
);
TextfileWindow::TextfileWindow(TextfileType file_type) : Window(), file_type(file_type)
{
this->CreateNestedTree(&_textfile_desc);
this->vscroll = this->GetScrollbar(WID_TF_VSCROLLBAR);
this->hscroll = this->GetScrollbar(WID_TF_HSCROLLBAR);
this->FinishInitNested(&_textfile_desc);
}
/* virtual */ TextfileWindow::~TextfileWindow()
{
free(this->text);
}
/* virtual */ void TextfileWindow::UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
{
switch (widget) {
case WID_TF_BACKGROUND:
this->line_height = FONT_HEIGHT_MONO + 2;
resize->height = this->line_height;
size->height = 4 * resize->height + TOP_SPACING + BOTTOM_SPACING; // At least 4 lines are visible.
size->width = max(200u, size->width); // At least 200 pixels wide.
break;
}
}
/* virtual */ void TextfileWindow::DrawWidget(const Rect &r, int widget) const
{
if (widget != WID_TF_BACKGROUND) return;
int width = r.right - r.left + 1 - WD_BEVEL_LEFT - WD_BEVEL_RIGHT;
int height = r.bottom - r.top + 1 - WD_BEVEL_LEFT - WD_BEVEL_RIGHT;
DrawPixelInfo new_dpi;
if (!FillDrawPixelInfo(&new_dpi, r.left + WD_BEVEL_LEFT, r.top, width, height)) return;
DrawPixelInfo *old_dpi = _cur_dpi;
_cur_dpi = &new_dpi;
int left, right;
if (_current_text_dir == TD_RTL) {
left = width + WD_BEVEL_RIGHT - WD_FRAMETEXT_RIGHT - this->hscroll->GetCount();
right = width + WD_BEVEL_RIGHT - WD_FRAMETEXT_RIGHT - 1 + this->hscroll->GetPosition();
} else {
left = WD_FRAMETEXT_LEFT - WD_BEVEL_LEFT - this->hscroll->GetPosition();
right = WD_FRAMETEXT_LEFT - WD_BEVEL_LEFT + this->hscroll->GetCount() - 1;
}
int top = TOP_SPACING;
for (uint i = 0; i < this->vscroll->GetCapacity() && i + this->vscroll->GetPosition() < this->lines.Length(); i++) {
DrawString(left, right, top + i * this->line_height, this->lines[i + this->vscroll->GetPosition()], TC_WHITE, SA_LEFT, false, FS_MONO);
}
_cur_dpi = old_dpi;
}
/* virtual */ void TextfileWindow::OnResize()
{
this->vscroll->SetCapacityFromWidget(this, WID_TF_BACKGROUND, TOP_SPACING + BOTTOM_SPACING);
this->hscroll->SetCapacityFromWidget(this, WID_TF_BACKGROUND);
}
/* virtual */ void TextfileWindow::Reset()
{
this->search_iterator = 0;
}
/* virtual */ FontSize TextfileWindow::DefaultSize()
{
return FS_MONO;
}
/* virtual */ const char *TextfileWindow::NextString()
{
if (this->search_iterator >= this->lines.Length()) return NULL;
return this->lines[this->search_iterator++];
}
/* virtual */ bool TextfileWindow::Monospace()
{
return true;
}
/* virtual */ void TextfileWindow::SetFontNames(FreeTypeSettings *settings, const char *font_name)
{
#ifdef WITH_FREETYPE
strecpy(settings->mono_font, font_name, lastof(settings->mono_font));
#endif /* WITH_FREETYPE */
}
/**
* Loads the textfile text from file, and setup #lines, #max_length, and both scrollbars.
*/
/* virtual */ void TextfileWindow::LoadTextfile(const char *textfile, Subdirectory dir)
{
if (textfile == NULL) return;
this->lines.Clear();
/* Get text from file */
size_t filesize;
FILE *handle = FioFOpenFile(textfile, "rb", dir, &filesize);
if (handle == NULL) return;
this->text = ReallocT(this->text, filesize + 1);
size_t read = fread(this->text, 1, filesize, handle);
fclose(handle);
if (read != filesize) return;
this->text[filesize] = '\0';
/* Replace tabs and line feeds with a space since str_validate removes those. */
for (char *p = this->text; *p != '\0'; p++) {
if (*p == '\t' || *p == '\r') *p = ' ';
}
/* Check for the byte-order-mark, and skip it if needed. */
char *p = this->text + (strncmp("\xEF\xBB\xBF", this->text, 3) == 0 ? 3 : 0);
/* Make sure the string is a valid UTF-8 sequence. */
str_validate(p, this->text + filesize, SVS_REPLACE_WITH_QUESTION_MARK | SVS_ALLOW_NEWLINE);
/* Split the string on newlines. */
*this->lines.Append() = p;
for (; *p != '\0'; p++) {
if (*p == '\n') {
*p = '\0';
*this->lines.Append() = p + 1;
}
}
CheckForMissingGlyphs(true, this);
/* Initialize scrollbars */
this->vscroll->SetCount(this->lines.Length());
this->max_length = 0;
for (uint i = 0; i < this->lines.Length(); i++) {
this->max_length = max(this->max_length, GetStringBoundingBox(this->lines[i], FS_MONO).width);
}
this->hscroll->SetCount(this->max_length + WD_FRAMETEXT_LEFT + WD_FRAMETEXT_RIGHT);
this->hscroll->SetStepSize(10); // Speed up horizontal scrollbar
}
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