diff options
Diffstat (limited to 'extension/src/openvic-extension/classes/GFXButtonStateTexture.cpp')
| -rw-r--r-- | extension/src/openvic-extension/classes/GFXButtonStateTexture.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/extension/src/openvic-extension/classes/GFXButtonStateTexture.cpp b/extension/src/openvic-extension/classes/GFXButtonStateTexture.cpp new file mode 100644 index 0000000..e6dff1f --- /dev/null +++ b/extension/src/openvic-extension/classes/GFXButtonStateTexture.cpp @@ -0,0 +1,106 @@ +#include "GFXButtonStateTexture.hpp" + +#include "openvic-extension/utility/ClassBindings.hpp" + +using namespace OpenVic; +using namespace godot; + +void GFXButtonStateTexture::_bind_methods() { + OV_BIND_METHOD(GFXButtonStateTexture::set_button_state, { "new_button_state" }); + OV_BIND_METHOD(GFXButtonStateTexture::get_button_state); + + OV_BIND_SMETHOD(get_generate_state_image_func_name); + + OV_BIND_SMETHOD(button_state_to_theme_name, { "button_state" }); + OV_BIND_METHOD(GFXButtonStateTexture::get_button_state_theme); + + OV_BIND_METHOD(GFXButtonStateTexture::generate_state_image, { "source_image" }); + + BIND_ENUM_CONSTANT(HOVER); + BIND_ENUM_CONSTANT(PRESSED); + BIND_ENUM_CONSTANT(DISABLED); +} + +GFXButtonStateTexture::GFXButtonStateTexture() : button_state { HOVER } {} + +Ref<GFXButtonStateTexture> GFXButtonStateTexture::make_gfx_button_state_texture( + ButtonState button_state, Ref<Image> const& source_image +) { + Ref<GFXButtonStateTexture> button_state_texture; + button_state_texture.instantiate(); + ERR_FAIL_NULL_V(button_state_texture, nullptr); + button_state_texture->set_button_state(button_state); + if (source_image.is_valid()) { + ERR_FAIL_COND_V(button_state_texture->generate_state_image(source_image) != OK, nullptr); + } + return button_state_texture; +} + +void GFXButtonStateTexture::set_button_state(ButtonState new_button_state) { + ERR_FAIL_COND(new_button_state != HOVER && new_button_state != PRESSED && new_button_state != DISABLED); + button_state = new_button_state; +} + +Error GFXButtonStateTexture::generate_state_image(Ref<Image> const& source_image) { + ERR_FAIL_COND_V(source_image.is_null() || source_image->is_empty(), FAILED); + /* Whether we've already set the ImageTexture to an image of the right dimensions and format, + * and so can update it without creating and setting a new image, or not. */ + const bool can_update = state_image.is_valid() && state_image->get_size() == source_image->get_size() + && state_image->get_format() == source_image->get_format(); + if (!can_update) { + state_image = Image::create(source_image->get_width(), source_image->get_height(), false, source_image->get_format()); + ERR_FAIL_NULL_V(state_image, FAILED); + } + + static constexpr auto hover_colour = [](Color const& colour) -> Color { + return { std::min(colour.r + 0.1f, 1.0f), std::min(colour.g + 0.1f, 1.0f), std::min(colour.b + 0.1f, 1.0f), colour.a }; + }; + static constexpr auto pressed_colour = [](Color const& colour) -> Color { + return { std::max(colour.r - 0.1f, 0.0f), std::max(colour.g - 0.1f, 0.0f), std::max(colour.b - 0.1f, 0.0f), colour.a }; + }; + static constexpr auto disabled_colour = [](Color const& colour) -> Color { + const float luma = colour.get_luminance(); + return { luma, luma, luma, colour.a }; + }; + + const auto colour_func = button_state == HOVER ? hover_colour : button_state == PRESSED ? pressed_colour : disabled_colour; + + for (Vector2i point { 0, 0 }; point.y < state_image->get_height(); ++point.y) { + for (point.x = 0; point.x < state_image->get_width(); ++point.x) { + state_image->set_pixelv(point, colour_func(source_image->get_pixelv(point))); + } + } + + if (can_update) { + update(state_image); + } else { + set_image(state_image); + } + return OK; +} + +StringName const& GFXButtonStateTexture::get_generate_state_image_func_name() { + static const StringName generate_state_image_func_name = "generate_state_image"; + return generate_state_image_func_name; +} + +StringName const& GFXButtonStateTexture::button_state_to_theme_name(ButtonState button_state) { + static const StringName theme_name_hover = "hover"; + static const StringName theme_name_pressed = "pressed"; + static const StringName theme_name_disabled = "disabled"; + static const StringName theme_name_error = ""; + switch (button_state) { + case HOVER: + return theme_name_hover; + case PRESSED: + return theme_name_pressed; + case DISABLED: + return theme_name_disabled; + default: + return theme_name_error; + } +} + +StringName const& GFXButtonStateTexture::get_button_state_theme() const { + return button_state_to_theme_name(button_state); +} |