void TextBox::_DEBUG_DrawOutline()
{
// Stores the positions of the four sides of the rectangle
float left = 0.0f;
float right = _width;
float bottom = 0.0f;
float top = _height;
// Draw the outline of the textbox
VideoManager->Move(0.0f, 0.0f);
CalculateAlignedRect(left, right, bottom, top);
VideoManager->DrawRectangleOutline(left, right, bottom, top, 3, alpha_black);
VideoManager->DrawRectangleOutline(left, right, bottom, top, 1, alpha_white);
// Draw the inner boundaries for each line of text
uint32 possible_lines = _height / _font_properties->line_skip;
float line_height = _font_properties->line_skip * -VideoManager->_current_context.coordinate_system.GetVerticalDirection();
float line_offset = top;
for(uint32 i = 1; i <= possible_lines; ++i) {
line_offset += line_height;
VideoManager->DrawLine(left, line_offset, right, line_offset, 3, alpha_black);
VideoManager->DrawLine(left, line_offset, right, line_offset, 1, alpha_white);
}
}
void GUIControl::_DEBUG_DrawOutline()
{
float left = 0.0f;
float right = _width;
float bottom = 0.0f;
float top = _height;
VideoManager->Move(0.0f, 0.0f);
CalculateAlignedRect(left, right, bottom, top);
VideoManager->DrawRectangleOutline(left, right, bottom, top, 3, alpha_black);
VideoManager->DrawRectangleOutline(left, right, bottom, top, 1, alpha_white);
}
void TextBox::Draw() {
if (_text.empty())
return;
if (_initialized == false) {
IF_PRINT_WARNING(VIDEO_DEBUG) << "function failed because the textbox was not initialized:\n" << _initialization_errors << endl;
return;
}
// Don't draw text window if parent window is hidden
if (_owner && _owner->GetState() == VIDEO_MENU_STATE_HIDDEN)
return;
// Take the following steps to draw the text:
// (1): Save the video engine's context and enable appropriate draw settings
// (2): Determine the coordinates of the textbox rectangle to draw
// (3): Create a ScreenRect for the textbox area and apply scissoring if its enabled
// (4): Determine the text draw position from the alignment flags
// (5): Draw each line of text to the screen
// (6): Restore the original video engine context
VideoManager->PushState();
VideoManager->SetDrawFlags(_xalign, _yalign, VIDEO_BLEND, 0);
// Stores the positions of the four sides of the rectangle
float left = 0.0f;
float right = _width;
float bottom = 0.0f;
float top = _height;
CalculateAlignedRect(left, right, bottom, top);
// Create a screen rectangle for the position and apply any scissoring
int32 x, y, w, h;
x = static_cast<int32>(left < right ? left : right);
y = static_cast<int32>(top < bottom ? top : bottom);
w = static_cast<int32>(right - left);
h = static_cast<int32>(top - bottom);
if (w < 0)
w = -w;
if (h < 0)
h = -h;
ScreenRect rect(x, y, w, h);
// TODO: this block of code (scissoring for textboxes) does not work properly
/*
if (_owner) {
rect.Intersect(_owner->GetScissorRect());
}
rect.Intersect(VideoManager->GetScissorRect());
VideoManager->EnableScissoring(_owner || VideoManager->IsScissoringEnabled());
if (VideoManager->IsScissoringEnabled()) {
VideoManager->SetScissorRect(rect);
}
*/
// Holds the height of the text to be drawn
float text_height = static_cast<float>(CalculateTextHeight());
// Holds the x and y position where the text should be drawn
float text_xpos, text_ypos;
// Determine the vertical position of the text based on the alignment
if (_text_yalign == VIDEO_Y_TOP) {
text_ypos = top;
}
else if (_text_yalign == VIDEO_Y_CENTER) {
text_ypos = top - (VideoManager->_current_context.coordinate_system.GetVerticalDirection() * (_height - text_height) * 0.5f);
}
else { // (_yalign == VIDEO_Y_BOTTOM)
text_ypos = top - (VideoManager->_current_context.coordinate_system.GetVerticalDirection() * (_height - text_height));
}
// Determine the horizontal position of the text based on the alignment
if (_text_xalign == VIDEO_X_LEFT) {
text_xpos = left;
}
else if (_text_xalign == VIDEO_X_CENTER) {
text_xpos = (left + right) * 0.5f; // TODO: Is this logic right? It doesn't seem so...
}
else { // (_text_xalign == VIDEO_X_RIGHT)
text_xpos = right;
}
// Set the draw cursor, draw flags, and draw the text
VideoManager->Move(0.0f, text_ypos);
VideoManager->SetDrawFlags(VIDEO_X_LEFT, VIDEO_Y_TOP, VIDEO_BLEND, 0);
_DrawTextLines(text_xpos, text_ypos, rect);
if (GUIManager->DEBUG_DrawOutlines() == true)
_DEBUG_DrawOutline(text_ypos);
VideoManager->PopState();
} // void TextBox::Draw()
void TextBox::_ReformatText()
{
// (1): Go through the text ustring and determine where the newline characters can be found, examining one line at a time and adding it to the _text vector.
size_t newline_pos;
size_t startline_pos = 0;
const size_t temp_length = _text_save.length();
_text.clear();
_num_chars = 0;
// If font not set, return (leave _text vector empty)
if(!_font_properties) {
IF_PRINT_WARNING(VIDEO_DEBUG) << "textbox font is invalid" << std::endl;
return;
}
while(startline_pos < temp_length)
{
newline_pos = _text_save.find(NEWLINE_CHARACTER,startline_pos);
// If the end of the string has been reached, add the new line and exit
if(newline_pos == ustring::npos) {
_AddLine(_text_save.substr(startline_pos, temp_length - startline_pos));
break;
}
// Otherwise, add the new line segment and proceed to find the next
else {
ustring tmp = _text_save.substr(startline_pos, newline_pos - startline_pos);
_AddLine(_text_save.substr(startline_pos, newline_pos - startline_pos));
startline_pos = newline_pos + 1;
}
}
// Update the scissor cache
// Stores the positions of the four sides of the rectangle
float left = 0.0f;
float right = _width;
float bottom = 0.0f;
float top = _height;
VideoManager->PushState();
VideoManager->SetDrawFlags(_xalign, _yalign, VIDEO_BLEND, 0);
CalculateAlignedRect(left, right, bottom, top);
VideoManager->PopState();
// Create a screen rectangle for the position and apply any scissoring
int32 x, y, w, h;
x = static_cast<int32>(left < right ? left : right);
y = static_cast<int32>(top < bottom ? top : bottom);
w = static_cast<int32>(right - left);
h = static_cast<int32>(top - bottom);
if(w < 0)
w = -w;
if(h < 0)
h = -h;
_scissor_rect.Set(x, y, w, h);
// Update the text height
_text_height = static_cast<float>(CalculateTextHeight());
// Calculate the height of the text and check it against the height of the textbox.
if(_text_height > _height) {
IF_PRINT_WARNING(VIDEO_DEBUG) << "tried to display text of height (" << _text_height
<< ") in a window of lower height (" << _height << ")" << std::endl;
}
// Determine the vertical position of the text based on the alignment
if(_text_yalign == VIDEO_Y_TOP) {
_text_ypos = top;
} else if(_text_yalign == VIDEO_Y_CENTER) {
_text_ypos = top - (VideoManager->_current_context.coordinate_system.GetVerticalDirection() * (_height - _text_height) * 0.5f);
} else { // (_yalign == VIDEO_Y_BOTTOM)
_text_ypos = top - (VideoManager->_current_context.coordinate_system.GetVerticalDirection() * (_height - _text_height));
}
// Determine the horizontal position of the text based on the alignment
if(_text_xalign == VIDEO_X_LEFT) {
_text_xpos = left;
} else if(_text_xalign == VIDEO_X_CENTER) {
_text_xpos = (left + right) * 0.5f; // * 0.5 equals /2.
} else { // (_text_xalign == VIDEO_X_RIGHT)
_text_xpos = right;
}
} // void TextBox::_ReformatText()
void MenuWindow::Update(uint32 frame_time) {
_display_timer += frame_time;
if (_display_timer >= VIDEO_MENU_SCROLL_TIME) {
if (_window_state == VIDEO_MENU_STATE_SHOWING)
_window_state = VIDEO_MENU_STATE_SHOWN;
else if (_window_state == VIDEO_MENU_STATE_HIDING)
_window_state = VIDEO_MENU_STATE_HIDDEN;
}
// TODO: This does not need to be done every update call (it always retuns the same thing so long
// as the window does not move. This is a performance problem and should be fixed so that this is
// only done with the window size or alignment changes.
if (_window_state == VIDEO_MENU_STATE_HIDDEN || _window_state == VIDEO_MENU_STATE_SHOWN) {
// if (_is_scissored == true) {
float x_buffer = (_width - _inner_width) / 2;
float y_buffer = (_height - _inner_height) / 2;
float left, right, bottom, top;
left = 0.0f;
right = _width;
bottom = 0.0f;
top = _height;
VideoManager->PushState();
VideoManager->SetDrawFlags(_xalign, _yalign, 0);
CalculateAlignedRect(left, right, bottom, top);
VideoManager->PopState();
_scissor_rect = VideoManager->CalculateScreenRect(left, right, bottom, top);
_scissor_rect.left += static_cast<int32>(x_buffer);
_scissor_rect.width -= static_cast<int32>(x_buffer * 2);
_scissor_rect.top += static_cast<int32>(y_buffer);
_scissor_rect.height -= static_cast<int32>(y_buffer * 2);
// }
_is_scissored = false;
return;
}
_is_scissored = true;
// Holds the amount of the window that should be drawn (1.0 == 100%)
float draw_percent = 1.0f;
if (_display_mode != VIDEO_MENU_INSTANT && _window_state != VIDEO_MENU_STATE_SHOWN) {
float time = static_cast<float>(_display_timer) / static_cast<float>(VIDEO_MENU_SCROLL_TIME);
if (time > 1.0f)
time = 1.0f;
if (_window_state == VIDEO_MENU_STATE_HIDING)
time = 1.0f - time;
draw_percent = time;
}
if (IsFloatEqual(draw_percent, 1.0f) == false) {
if (_display_mode == VIDEO_MENU_EXPAND_FROM_CENTER) {
float left, right, bottom, top;
left = 0.0f;
right = _width;
bottom = 0.0f;
top = _height;
VideoManager->PushState();
VideoManager->SetDrawFlags(_xalign, _yalign, 0);
CalculateAlignedRect(left, right, bottom, top);
VideoManager->PopState();
float center = (top + bottom) * 0.5f;
bottom = center * (1.0f - draw_percent) + bottom * draw_percent;
top = center * (1.0f - draw_percent) + top * draw_percent;
_scissor_rect = VideoManager->CalculateScreenRect(left, right, bottom, top);
}
}
} // void MenuWindow::Update(uint32 frame_time)