minetest/src/gui/StyleSpec.h

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/*
Minetest
Copyright (C) 2019 rubenwardy
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "client/tile.h" // ITextureSource
#include "debug.h"
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#include "irrlichttypes_extrabloated.h"
#include "util/string.h"
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#include <array>
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#pragma once
class StyleSpec
{
public:
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enum Property
{
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TEXTCOLOR,
BGCOLOR,
BGCOLOR_HOVERED, // Note: Deprecated property
BGCOLOR_PRESSED, // Note: Deprecated property
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NOCLIP,
BORDER,
BGIMG,
BGIMG_HOVERED, // Note: Deprecated property
BGIMG_MIDDLE,
BGIMG_PRESSED, // Note: Deprecated property
FGIMG,
FGIMG_HOVERED, // Note: Deprecated property
FGIMG_PRESSED, // Note: Deprecated property
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ALPHA,
NUM_PROPERTIES,
NONE
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};
enum State
{
STATE_DEFAULT = 0,
STATE_HOVERED = 1 << 0,
STATE_PRESSED = 1 << 1,
NUM_STATES = 1 << 2,
STATE_INVALID = 1 << 3,
};
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private:
std::array<bool, NUM_PROPERTIES> property_set{};
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std::array<std::string, NUM_PROPERTIES> properties;
State state_map = STATE_DEFAULT;
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public:
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static Property GetPropertyByName(const std::string &name)
{
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if (name == "textcolor") {
return TEXTCOLOR;
} else if (name == "bgcolor") {
return BGCOLOR;
} else if (name == "bgcolor_hovered") {
return BGCOLOR_HOVERED;
} else if (name == "bgcolor_pressed") {
return BGCOLOR_PRESSED;
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} else if (name == "noclip") {
return NOCLIP;
} else if (name == "border") {
return BORDER;
} else if (name == "bgimg") {
return BGIMG;
} else if (name == "bgimg_hovered") {
return BGIMG_HOVERED;
} else if (name == "bgimg_middle") {
return BGIMG_MIDDLE;
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} else if (name == "bgimg_pressed") {
return BGIMG_PRESSED;
} else if (name == "fgimg") {
return FGIMG;
} else if (name == "fgimg_hovered") {
return FGIMG_HOVERED;
} else if (name == "fgimg_pressed") {
return FGIMG_PRESSED;
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} else if (name == "alpha") {
return ALPHA;
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} else {
return NONE;
}
}
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std::string get(Property prop, std::string def) const
{
const auto &val = properties[prop];
return val.empty() ? def : val;
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}
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void set(Property prop, const std::string &value)
{
properties[prop] = value;
property_set[prop] = true;
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}
//! Parses a name and returns the corresponding state enum
static State getStateByName(const std::string &name)
{
if (name == "default") {
return STATE_DEFAULT;
} else if (name == "hovered") {
return STATE_HOVERED;
} else if (name == "pressed") {
return STATE_PRESSED;
} else {
return STATE_INVALID;
}
}
//! Gets the state that this style is intended for
State getState() const
{
return state_map;
}
//! Set the given state on this style
void addState(State state)
{
FATAL_ERROR_IF(state >= NUM_STATES, "Out-of-bounds state received");
state_map = static_cast<State>(state_map | state);
}
//! Using a list of styles mapped to state values, calculate the final
// combined style for a state by propagating values in its component states
static StyleSpec getStyleFromStatePropagation(const std::array<StyleSpec, NUM_STATES> &styles, State state)
{
StyleSpec temp = styles[StyleSpec::STATE_DEFAULT];
temp.state_map = state;
for (int i = StyleSpec::STATE_DEFAULT + 1; i <= state; i++) {
if ((state & i) != 0) {
temp = temp | styles[i];
}
}
return temp;
}
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video::SColor getColor(Property prop, video::SColor def) const
{
const auto &val = properties[prop];
if (val.empty()) {
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return def;
}
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parseColorString(val, def, false, 0xFF);
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return def;
}
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video::SColor getColor(Property prop) const
{
const auto &val = properties[prop];
FATAL_ERROR_IF(val.empty(), "Unexpected missing property");
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video::SColor color;
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parseColorString(val, color, false, 0xFF);
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return color;
}
irr::core::rect<s32> getRect(Property prop, irr::core::rect<s32> def) const
{
const auto &val = properties[prop];
if (val.empty())
return def;
irr::core::rect<s32> rect;
if (!parseRect(val, &rect))
return def;
return rect;
}
irr::core::rect<s32> getRect(Property prop) const
{
const auto &val = properties[prop];
FATAL_ERROR_IF(val.empty(), "Unexpected missing property");
irr::core::rect<s32> rect;
parseRect(val, &rect);
return rect;
}
video::ITexture *getTexture(Property prop, ISimpleTextureSource *tsrc,
video::ITexture *def) const
{
const auto &val = properties[prop];
if (val.empty()) {
return def;
}
video::ITexture *texture = tsrc->getTexture(val);
return texture;
}
video::ITexture *getTexture(Property prop, ISimpleTextureSource *tsrc) const
{
const auto &val = properties[prop];
FATAL_ERROR_IF(val.empty(), "Unexpected missing property");
video::ITexture *texture = tsrc->getTexture(val);
return texture;
}
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bool getBool(Property prop, bool def) const
{
const auto &val = properties[prop];
if (val.empty()) {
return def;
}
return is_yes(val);
}
inline bool isNotDefault(Property prop) const
{
return !properties[prop].empty();
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}
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inline bool hasProperty(Property prop) const { return property_set[prop]; }
StyleSpec &operator|=(const StyleSpec &other)
{
for (size_t i = 0; i < NUM_PROPERTIES; i++) {
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auto prop = (Property)i;
if (other.hasProperty(prop)) {
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set(prop, other.get(prop, ""));
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}
}
return *this;
}
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StyleSpec operator|(const StyleSpec &other) const
{
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StyleSpec newspec = *this;
newspec |= other;
return newspec;
}
private:
bool parseRect(const std::string &value, irr::core::rect<s32> *parsed_rect) const
{
irr::core::rect<s32> rect;
std::vector<std::string> v_rect = split(value, ',');
if (v_rect.size() == 1) {
s32 x = stoi(v_rect[0]);
rect.UpperLeftCorner = irr::core::vector2di(x, x);
rect.LowerRightCorner = irr::core::vector2di(-x, -x);
} else if (v_rect.size() == 2) {
s32 x = stoi(v_rect[0]);
s32 y = stoi(v_rect[1]);
rect.UpperLeftCorner = irr::core::vector2di(x, y);
rect.LowerRightCorner = irr::core::vector2di(-x, -y);
// `-x` is interpreted as `w - x`
} else if (v_rect.size() == 4) {
rect.UpperLeftCorner = irr::core::vector2di(
stoi(v_rect[0]), stoi(v_rect[1]));
rect.LowerRightCorner = irr::core::vector2di(
stoi(v_rect[2]), stoi(v_rect[3]));
} else {
warningstream << "Invalid rectangle string format: \"" << value
<< "\"" << std::endl;
return false;
}
*parsed_rect = rect;
return true;
}
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};