OpenRCT2/src/openrct2-ui/windows/Changelog.cpp

274 lines
8.7 KiB
C++

#pragma region Copyright (c) 2014-2017 OpenRCT2 Developers
/*****************************************************************************
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
* For more information, visit https://github.com/OpenRCT2/OpenRCT2
*
* OpenRCT2 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 3 of the License, or
* (at your option) any later version.
*
* A full copy of the GNU General Public License can be found in licence.txt
*****************************************************************************/
#pragma endregion
#include <openrct2/Context.h>
#include <openrct2/OpenRCT2.h>
#include <openrct2/core/Math.hpp>
#include <openrct2/core/Memory.hpp>
#include <openrct2-ui/windows/Window.h>
#include <openrct2/interface/widget.h>
#include <openrct2/localisation/localisation.h>
#include <openrct2/platform/platform.h>
#include <openrct2/util/util.h>
enum {
WIDX_BACKGROUND,
WIDX_TITLE,
WIDX_CLOSE,
WIDX_CONTENT_PANEL,
WIDX_SCROLL
};
#define WW 500
#define WH 400
#define MIN_WW 300
#define MIN_WH 200
static rct_widget window_changelog_widgets[] = {
{ WWT_FRAME, 0, 0, WW - 1, 0, WH - 1, 0xFFFFFFFF, STR_NONE }, // panel / background
{ WWT_CAPTION, 0, 1, WW - 2, 1, 14, STR_CHANGELOG_TITLE, STR_WINDOW_TITLE_TIP }, // title bar
{ WWT_CLOSEBOX, 0, WW - 13, WW - 3, 2, 13, STR_CLOSE_X, STR_CLOSE_WINDOW_TIP }, // close x button
{ WWT_RESIZE, 1, 0, WW - 1, 14, WH - 1, 0xFFFFFFFF, STR_NONE }, // content panel
{ WWT_SCROLL, 1, 3, WW - 3, 16, WH - 15, SCROLL_BOTH, STR_NONE }, // scroll area
{ WIDGETS_END },
};
static void window_changelog_close(rct_window *w);
static void window_changelog_mouseup(rct_window *w, rct_widgetindex widgetIndex);
static void window_changelog_resize(rct_window *w);
static void window_changelog_scrollgetsize(rct_window *w, sint32 scrollIndex, sint32 *width, sint32 *height);
static void window_changelog_invalidate(rct_window *w);
static void window_changelog_paint(rct_window *w, rct_drawpixelinfo *dpi);
static void window_changelog_scrollpaint(rct_window *w, rct_drawpixelinfo *dpi, sint32 scrollIndex);
static rct_window_event_list window_changelog_events = {
window_changelog_close,
window_changelog_mouseup,
window_changelog_resize,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
window_changelog_scrollgetsize,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
nullptr,
window_changelog_invalidate,
window_changelog_paint,
window_changelog_scrollpaint
};
static bool window_changelog_read_file();
static void window_changelog_dispose_file();
static char *_changelogText = nullptr;
static size_t _changelogTextSize = 0;
static char **_changelogLines = nullptr;
static sint32 _changelogNumLines = 0;
static sint32 _changelogLongestLineWidth = 0;
rct_window * window_changelog_open()
{
rct_window* window;
window = window_bring_to_front_by_class(WC_CHANGELOG);
if (window != nullptr)
return window;
if (!window_changelog_read_file())
return nullptr;
sint32 screenWidth = context_get_width();
sint32 screenHeight = context_get_height();
window = window_create_centred(
screenWidth * 4 / 5,
screenHeight * 4 / 5,
&window_changelog_events,
WC_CHANGELOG,
WF_RESIZABLE
);
window->widgets = window_changelog_widgets;
window->enabled_widgets = (1 << WIDX_CLOSE);
window_init_scroll_widgets(window);
window->min_width = MIN_WW;
window->min_height = MIN_WH;
window->max_width = MIN_WW;
window->max_height = MIN_WH;
return window;
}
static void window_changelog_close(rct_window *w)
{
window_changelog_dispose_file();
}
static void window_changelog_mouseup(rct_window *w, rct_widgetindex widgetIndex)
{
switch (widgetIndex) {
case WIDX_CLOSE:
window_close(w);
break;
}
}
static void window_changelog_resize(rct_window *w)
{
sint32 screenWidth = context_get_width();
sint32 screenHeight = context_get_height();
w->max_width = (screenWidth * 4) / 5;
w->max_height = (screenHeight * 4) / 5;
w->min_width = MIN_WW;
w->min_height = MIN_WH;
if (w->width < w->min_width) {
window_invalidate(w);
w->width = w->min_width;
}
if (w->height < w->min_height) {
window_invalidate(w);
w->height = w->min_height;
}
}
static void window_changelog_scrollgetsize(rct_window *w, sint32 scrollIndex, sint32 *width, sint32 *height)
{
*width = _changelogLongestLineWidth + 4;
*height = _changelogNumLines * 11;
}
static void window_changelog_invalidate(rct_window *w)
{
window_changelog_widgets[WIDX_BACKGROUND].right = w->width - 1;
window_changelog_widgets[WIDX_BACKGROUND].bottom = w->height - 1;
window_changelog_widgets[WIDX_TITLE].right = w->width - 2;
window_changelog_widgets[WIDX_CLOSE].left = w->width - 13;
window_changelog_widgets[WIDX_CLOSE].right = w->width - 3;
window_changelog_widgets[WIDX_CONTENT_PANEL].right = w->width - 1;
window_changelog_widgets[WIDX_CONTENT_PANEL].bottom = w->height - 1;
window_changelog_widgets[WIDX_SCROLL].right = w->width - 3;
window_changelog_widgets[WIDX_SCROLL].bottom = w->height - 15;
}
static void window_changelog_paint(rct_window *w, rct_drawpixelinfo *dpi)
{
window_draw_widgets(w, dpi);
}
static void window_changelog_scrollpaint(rct_window *w, rct_drawpixelinfo *dpi, sint32 scrollIndex)
{
gCurrentFontFlags = 0;
gCurrentFontSpriteBase = FONT_SPRITE_BASE_MEDIUM;
sint32 x = 3;
sint32 y = 3;
for (sint32 i = 0; i < _changelogNumLines; i++) {
gfx_draw_string(dpi, _changelogLines[i], w->colours[0], x, y);
y += 11;
}
}
static bool window_changelog_read_file()
{
window_changelog_dispose_file();
utf8 path[MAX_PATH];
platform_get_changelog_path(path, sizeof(path));
if (!readentirefile(path, (void**)&_changelogText, &_changelogTextSize)) {
log_error("Unable to read changelog.txt");
return false;
}
void* new_memory = realloc(_changelogText, _changelogTextSize + 1);
if (new_memory == nullptr) {
log_error("Failed to reallocate memory for changelog text");
return false;
}
_changelogText = (char*)new_memory;
_changelogText[_changelogTextSize++] = 0;
char *start = _changelogText;
if (_changelogTextSize >= 3 && utf8_is_bom(_changelogText))
start += 3;
sint32 changelogLinesCapacity = 8;
_changelogLines = Memory::Allocate<utf8*>(changelogLinesCapacity * sizeof(char*));
_changelogLines[0] = start;
_changelogNumLines = 1;
char *ch = start;
while (*ch != 0) {
uint8 c = *ch;
if (c == '\n') {
*ch++ = 0;
_changelogNumLines++;
if (_changelogNumLines > changelogLinesCapacity) {
changelogLinesCapacity *= 2;
new_memory = realloc(_changelogLines, changelogLinesCapacity * sizeof(char*));
if (new_memory == nullptr) {
log_error("Failed to reallocate memory for change log lines");
return false;
}
_changelogLines = (char**)new_memory;
}
_changelogLines[_changelogNumLines - 1] = ch;
} else if (c < 32 || c > 122) {
// A character that won't be drawn or change state.
*ch++ = FORMAT_OUTLINE_OFF;
} else {
ch++;
}
}
new_memory = realloc(_changelogLines, _changelogNumLines * sizeof(char*));
if (new_memory == nullptr) {
log_error("Failed to reallocate memory for change log lines");
return false;
}
_changelogLines = (char**)new_memory;
gCurrentFontSpriteBase = FONT_SPRITE_BASE_MEDIUM;
_changelogLongestLineWidth = 0;
for (sint32 i = 0; i < _changelogNumLines; i++) {
sint32 width = gfx_get_string_width(_changelogLines[i]);
_changelogLongestLineWidth = Math::Max(width, _changelogLongestLineWidth);
}
return true;
}
static void window_changelog_dispose_file()
{
SafeFree(_changelogText);
SafeFree(_changelogLines);
_changelogTextSize = 0;
_changelogNumLines = 0;
}