/* $Id$ */ /* * 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 texteff.cpp Handling of text effects. */ #include "stdafx.h" #include "openttd.h" #include "strings_type.h" #include "texteff.hpp" #include "core/bitmath_func.hpp" #include "transparency.h" #include "strings_func.h" #include "core/alloc_func.hpp" #include "viewport_func.h" #include "settings_type.h" enum { INIT_NUM_TEXT_EFFECTS = 20, }; struct TextEffect { StringID string_id; int32 x; int32 y; int32 right; int32 bottom; uint16 duration; uint64 params_1; TextEffectMode mode; }; /* used for text effects */ static TextEffect *_text_effect_list = NULL; static uint16 _num_text_effects = INIT_NUM_TEXT_EFFECTS; /* Text Effects */ /** * Mark the area of the text effect as dirty. * * This function marks the area of a text effect as dirty for repaint. * * @param te The TextEffect to mark the area dirty * @ingroup dirty */ static void MarkTextEffectAreaDirty(TextEffect *te) { /* Width and height of the text effect are doubled, so they are correct in both zoom out levels 1x and 2x. */ MarkAllViewportsDirty( te->x, te->y - 1, (te->right - te->x)*2 + te->x + 1, (te->bottom - (te->y - 1)) * 2 + (te->y - 1) + 1 ); } TextEffectID AddTextEffect(StringID msg, int x, int y, uint16 duration, TextEffectMode mode) { TextEffect *te; int w; char buffer[100]; TextEffectID i; if (_game_mode == GM_MENU) return INVALID_TE_ID; /* Look for a free spot in the text effect array */ for (i = 0; i < _num_text_effects; i++) { if (_text_effect_list[i].string_id == INVALID_STRING_ID) break; } /* If there is none found, we grow the array */ if (i == _num_text_effects) { _num_text_effects += 25; _text_effect_list = ReallocT<TextEffect>(_text_effect_list, _num_text_effects); for (; i < _num_text_effects; i++) _text_effect_list[i].string_id = INVALID_STRING_ID; i = _num_text_effects - 1; } te = &_text_effect_list[i]; /* Start defining this object */ te->string_id = msg; te->duration = duration; te->y = y - 5; te->bottom = y + 5; te->params_1 = GetDParam(0); te->mode = mode; GetString(buffer, msg, lastof(buffer)); w = GetStringBoundingBox(buffer).width; te->x = x - (w >> 1); te->right = x + (w >> 1) - 1; MarkTextEffectAreaDirty(te); return i; } void UpdateTextEffect(TextEffectID te_id, StringID msg) { assert(te_id < _num_text_effects); TextEffect *te; /* Update details */ te = &_text_effect_list[te_id]; te->string_id = msg; te->params_1 = GetDParam(0); /* Update width of text effect */ char buffer[100]; GetString(buffer, msg, lastof(buffer)); int w = GetStringBoundingBox(buffer).width; /* Only allow to make it broader, so it completely covers the old text. That avoids remnants of the old text. */ int right_new = te->x + w; if (te->right < right_new) te->right = right_new; MarkTextEffectAreaDirty(te); } void RemoveTextEffect(TextEffectID te_id) { assert(te_id < _num_text_effects); TextEffect *te; te = &_text_effect_list[te_id]; MarkTextEffectAreaDirty(te); te->string_id = INVALID_STRING_ID; } static void MoveTextEffect(TextEffect *te) { /* Never expire for duration of 0xFFFF */ if (te->duration == 0xFFFF) return; if (te->duration < 8) { te->string_id = INVALID_STRING_ID; } else { te->duration -= 8; te->y--; te->bottom--; } MarkTextEffectAreaDirty(te); } void MoveAllTextEffects() { for (TextEffectID i = 0; i < _num_text_effects; i++) { TextEffect *te = &_text_effect_list[i]; if (te->string_id != INVALID_STRING_ID && te->mode == TE_RISING) MoveTextEffect(te); } } void InitTextEffects() { if (_text_effect_list == NULL) _text_effect_list = MallocT<TextEffect>(_num_text_effects); for (TextEffectID i = 0; i < _num_text_effects; i++) _text_effect_list[i].string_id = INVALID_STRING_ID; } void DrawTextEffects(DrawPixelInfo *dpi) { switch (dpi->zoom) { case ZOOM_LVL_NORMAL: for (TextEffectID i = 0; i < _num_text_effects; i++) { TextEffect *te = &_text_effect_list[i]; if (te->string_id != INVALID_STRING_ID && dpi->left <= te->right && dpi->top <= te->bottom && dpi->left + dpi->width > te->x && dpi->top + dpi->height > te->y) { if (te->mode == TE_RISING || (_settings_client.gui.loading_indicators && !IsTransparencySet(TO_LOADING))) { AddStringToDraw(te->x, te->y, te->string_id, te->params_1, INVALID_STRING_ID); } } } break; case ZOOM_LVL_OUT_2X: for (TextEffectID i = 0; i < _num_text_effects; i++) { TextEffect *te = &_text_effect_list[i]; if (te->string_id != INVALID_STRING_ID && dpi->left <= te->right * 2 - te->x && dpi->top <= te->bottom * 2 - te->y && dpi->left + dpi->width > te->x && dpi->top + dpi->height > te->y) { if (te->mode == TE_RISING || (_settings_client.gui.loading_indicators && !IsTransparencySet(TO_LOADING))) { AddStringToDraw(te->x, te->y, (StringID)(te->string_id - 1), te->params_1, INVALID_STRING_ID); } } } break; case ZOOM_LVL_OUT_4X: case ZOOM_LVL_OUT_8X: break; default: NOT_REACHED(); } }