sprite.cpp

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/***********************************************************************
 Freeciv - Copyright (C) 1996 - A Kjeldberg, L Gregersen, P Unold
   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, or (at your option)
   any later version.
 
   This program 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.
***********************************************************************/
 
#ifdef HAVE_CONFIG_H
#include <fc_config.h>
#endif
 
// Qt
#include <QImageReader>
#include <QPainter>
 
// gui-qt
#include "colors.h"
#include "fc_client.h"
#include "qtg_cxxside.h"
#include "sprite.h"
 
static const char **gfx_array_extensions = nullptr;
 
/************************************************************************/
const char **gfx_fileextensions(void)
{
  QList<QByteArray> gfx_ext;
  QList<QByteArray>::iterator iter;
  int j = 0;
 
  if (gfx_array_extensions != nullptr) {
    return gfx_array_extensions;
  }
 
  gfx_ext = QImageReader::supportedImageFormats();
 
  gfx_array_extensions = new const char *[gfx_ext.count() + 1];
  for (iter = gfx_ext.begin(); iter != gfx_ext.end(); iter++) {
    char *ext;
    int extlen = iter->size() + 1;
 
    ext = static_cast<char *>(fc_malloc(extlen));
    strncpy(ext, iter->data(), extlen);
    gfx_array_extensions[j] = ext;
    j++;
  }
  gfx_array_extensions[j] = nullptr;
 
  return gfx_array_extensions;
}
 
/************************************************************************/
struct sprite *qtg_load_gfxfile(const char *filename, bool svgflag)
{
  sprite *entire = new sprite;
  QPixmap *pm = new QPixmap;
 
  if (QPixmapCache::find(QString(filename), pm)) {
    entire->pm = pm;
    return entire;
  }
  pm->load(QString(filename));
  entire->pm = pm;
  QPixmapCache::insert(QString(filename), *pm);
 
  return entire;
}
 
/************************************************************************/
struct sprite *qtg_crop_sprite(struct sprite *source,
                               int x, int y, int width, int height,
                               struct sprite *mask,
                               int mask_offset_x, int mask_offset_y,
                               float scale, bool smooth)
{
  QPainter p;
  QRectF source_rect;
  QRectF dest_rect;
  sprite *cropped;
  int widthzoom;
  int heightzoom;
  int hex = 0;
 
  fc_assert_ret_val(source, nullptr);
 
  if (!width || !height) {
    return nullptr;
  }
  if (scale != 1.0f && (tileset_hex_height(tileset) > 0
      || tileset_hex_width(tileset) > 0)) {
    hex = 1;
  }
  widthzoom = ceil(width * scale) + hex;
  heightzoom = ceil(height * scale) + hex;
  cropped = new sprite;
  cropped->pm = new QPixmap(widthzoom, heightzoom);
  cropped->pm->fill(Qt::transparent);
  source_rect = QRectF(x, y, width, height);
  dest_rect = QRectF(0, 0, widthzoom, heightzoom);
 
  p.begin(cropped->pm);
  if (smooth) {
    p.setRenderHint(QPainter::SmoothPixmapTransform);
  }
  p.setRenderHint(QPainter::Antialiasing);
  p.drawPixmap(dest_rect, *source->pm, source_rect);
  p.end();
 
  if (mask) {
    int mw = mask->pm->width();
    int mh = mask->pm->height();
 
    source_rect = QRectF(0, 0, mw, mh);
    dest_rect = QRectF(mask_offset_x - x, mask_offset_y - y, mw, mh);
    p.begin(cropped->pm);
    p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
    p.setRenderHint(QPainter::Antialiasing);
    p.setRenderHint(QPainter::SmoothPixmapTransform);
    p.drawPixmap(dest_rect, *mask->pm, source_rect);
    p.end();
  }
 
  return cropped;
}
 
/************************************************************************/
void qtg_get_sprite_dimensions(struct sprite *sprite, int *width, int *height)
{
  *width = sprite->pm->width();
  *height = sprite->pm->height();
}
 
/************************************************************************/
void qtg_free_sprite(struct sprite *s)
{
  delete s->pm;
  delete s;
}
 
/************************************************************************/
struct sprite *qtg_create_sprite(int width, int height, struct color *pcolor)
{
  struct sprite *created = new sprite;
 
  created->pm = new QPixmap(width, height);
 
  created->pm->fill(pcolor->qcolor);
 
  return created;
}
 
/************************************************************************/
struct sprite *qtg_load_gfxnumber(int num)
{
  struct sprite *spr = new sprite;
  QString ns;
  int w, h;
  QPixmap *pm;
  // FIXME: This should not depend on city_productions font setting
  QFont *qf = fc_font::instance()->get_font(fonts::city_productions);
 
  if (gui()->map_scale != 1.0f && gui()->map_font_scale) {
    int ssize = ceil(gui()->map_scale * fc_font::instance()->prod_fontsize);
 
    if (qf->pointSize() != ssize) {
      qf->setPointSize(ssize);
    }
  }
 
  QFontMetrics fm(*qf);
 
  if (num > 20) {
    ns = QString::number(num);
  } else {
#ifdef __cpp_char8_t
    const char8_t
#else
    const char
#endif
        *numsbuf[21] = {
      u8"\0xF0\0x9F\0x84\0x8C",
      u8"\u278A",
      u8"\u278B",
      u8"\u278C",
      u8"\u278D",
      u8"\u278E",
      u8"\u278F",
      u8"\u2790",
      u8"\u2791",
      u8"\u2792",
      u8"\u2793",
      u8"\u24EB",
      u8"\u24EC",
      u8"\u24ED",
      u8"\u24EE",
      u8"\u24EF",
      u8"\u24F0",
      u8"\u24F1",
      u8"\u24F2",
      u8"\u24F3",
      u8"\u24F4"
    };
 
#ifdef FC_QT5_MODE
    ns = QString((const char *)numsbuf[num]);
  }
 
  w = fm.horizontalAdvance(ns);
  h = fm.height();
  pm = new QPixmap(w, h);
  pm->fill(Qt::transparent);
 
  QPainter paint(pm);
 
  paint.setFont(*qf);
  paint.setBrush(Qt::transparent);
  paint.setPen(QColor(Qt::black));
  paint.drawText(QRect(0, 0, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                 QString((const char *)u8"\u26AB"));
 
  if (num > 20) {
    paint.setPen(QColor(Qt::yellow));
    paint.drawText(QRect(-2, 0, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString((const char *)u8"\u2B24"));
    paint.drawText(QRect(4, -2, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString((const char *)u8"\u2B24"));
    paint.drawText(QRect(4, 2, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString((const char *)u8"\u2B24"));
    paint.drawText(QRect(8, 0, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString((const char *)u8"\u2B24"));
  }
#else  // FC_QT5_MODE
    ns = QString(numsbuf[num]);
  }
 
  w = fm.horizontalAdvance(ns);
  h = fm.height();
  pm = new QPixmap(w, h);
  pm->fill(Qt::transparent);
 
  QPainter paint(pm);
 
  paint.setFont(*qf);
  paint.setBrush(Qt::transparent);
  paint.setPen(QColor(Qt::black));
  paint.drawText(QRect(0, 0, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                 QString(u8"\u26AB"));
 
  if (num > 20) {
    paint.setPen(QColor(Qt::yellow));
    paint.drawText(QRect(-2, 0, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString(u8"\u2B24"));
    paint.drawText(QRect(4, -2, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString(u8"\u2B24"));
    paint.drawText(QRect(4, 2, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString(u8"\u2B24"));
    paint.drawText(QRect(8, 0, w, h), Qt::AlignLeft | Qt::AlignVCenter,
                   QString(u8"\u2B24"));
  }
#endif // FC_QT5_MODE
 
  paint.setPen(QColor((num > 20) ? Qt::black : Qt::yellow));
  paint.drawText(QRect(0, 0, w, h), Qt::AlignLeft | Qt::AlignVCenter, ns);
  paint.end();
 
  spr->pm = pm;
 
  return spr;
}