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author | Daniel Wilhelm <daniel@wili.li> | 2014-04-18 17:27:42 +0200 |
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committer | Daniel Wilhelm <daniel@wili.li> | 2014-04-18 17:27:42 +0200 |
commit | b916407a2a06f8452e82b74dc44c54acbcc572b0 (patch) | |
tree | 46358e0bb035fca0f42edb4b5b8aa5f1613814af /wx+/button.cpp | |
parent | 5.20 (diff) | |
download | FreeFileSync-b916407a2a06f8452e82b74dc44c54acbcc572b0.tar.gz FreeFileSync-b916407a2a06f8452e82b74dc44c54acbcc572b0.tar.bz2 FreeFileSync-b916407a2a06f8452e82b74dc44c54acbcc572b0.zip |
5.21
Diffstat (limited to 'wx+/button.cpp')
-rw-r--r-- | wx+/button.cpp | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/wx+/button.cpp b/wx+/button.cpp deleted file mode 100644 index 806c0969..00000000 --- a/wx+/button.cpp +++ /dev/null @@ -1,305 +0,0 @@ -// ************************************************************************** -// * This file is part of the FreeFileSync project. It is distributed under * -// * GNU General Public License: http://www.gnu.org/licenses/gpl.html * -// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved * -// ************************************************************************** - -#include "button.h" -#include <algorithm> -#include <limits> -#include <cmath> -#include <zen/string_tools.h> -#include <wx/dcmemory.h> -#include <wx/image.h> -#include "image_tools.h" - -using namespace zen; - - -void zen::setImage(wxBitmapButton& button, const wxBitmap& bmp) -{ - if (!isEqual(button.GetBitmapLabel(), bmp)) - button.SetBitmapLabel(bmp); -} - - -BitmapButton::BitmapButton(wxWindow* parent, - wxWindowID id, - const wxString& label, - const wxPoint& pos, - const wxSize& size, - long style, - const wxValidator& validator, - const wxString& name) : - wxBitmapButton(parent, id, wxNullBitmap, pos, size, style | wxBU_AUTODRAW, validator, name), - spaceAfter_(0), - spaceBefore_(0), - innerBorderSize(5) -{ - SetLabel(label); -} - - -void BitmapButton::setBitmapFront(const wxBitmap& bitmap, int spaceAfter) -{ - if (!isEqual(bitmap, bitmapFront) || spaceAfter_ != spaceAfter) //avoid flicker - { - bitmapFront = bitmap; - spaceAfter_ = spaceAfter; - refreshButtonLabel(); - } -} - - -void BitmapButton::SetLabel(const wxString& label) -{ - if (wxBitmapButton::GetLabel() != label) //avoid flicker - { - wxBitmapButton::SetLabel(label); - refreshButtonLabel(); - } -} - -void BitmapButton::setBitmapBack(const wxBitmap& bitmap, int spaceBefore) -{ - if (!isEqual(bitmap, bitmapBack) || spaceBefore_ != spaceBefore) //avoid flicker - { - bitmapBack = bitmap; - spaceBefore_ = spaceBefore; - refreshButtonLabel(); - } -} - - -namespace -{ -void makeWhiteTransparent(wxImage& image) //assume black text on white background -{ - if (unsigned char* alphaFirst = image.GetAlpha()) - { - unsigned char* alphaLast = alphaFirst + image.GetWidth() * image.GetHeight(); - - //dist(black, white) - const double distBlackWhite = 255 * std::sqrt(3.0); - - const unsigned char* bytePos = image.GetData(); - - for (unsigned char* j = alphaFirst; j != alphaLast; ++j) - { - unsigned char r = *bytePos++; // - unsigned char g = *bytePos++; //each pixel consists of three bytes - unsigned char b = *bytePos++; // - - //dist((r,g,b), white) - double distColWhite = std::sqrt((255.0 - r) * (255.0 - r) + - (255.0 - g) * (255.0 - g) + - (255.0 - b) * (255.0 - b)); - - //black(0,0,0) becomes fully opaque(255), while white(255,255,255) becomes transparent(0) - *j = distColWhite / distBlackWhite * wxIMAGE_ALPHA_OPAQUE; - } - } -} - - -wxSize getSizeNeeded(const wxString& text, wxFont& font) -{ - wxCoord width = 0; - wxCoord height = 0; - - //the context used for bitmaps... - wxMemoryDC().GetMultiLineTextExtent(replaceCpy(text, L"&", L"", false), //remove accelerator - &width, &height, nullptr, &font); - - return wxSize(width, height); -} -} - - -wxBitmap BitmapButton::createBitmapFromText(const wxString& text) -{ - //wxDC::DrawLabel() doesn't respect alpha channel at all => apply workaround to calculate alpha values manually: - - if (text.empty()) - return wxBitmap(); - - wxFont currentFont = wxBitmapButton::GetFont(); - wxColor textColor = wxBitmapButton::GetForegroundColour(); - - wxSize sizeNeeded = getSizeNeeded(text, currentFont); - wxBitmap newBitmap(sizeNeeded.GetWidth(), sizeNeeded.GetHeight()); - - { - wxMemoryDC dc(newBitmap); - - //set up white background - dc.SetBackground(*wxWHITE_BRUSH); - dc.Clear(); - - //find position of accelerator - const size_t accelPos = text.find(L"&"); - const int indexAccel = accelPos != wxString::npos ? static_cast<int>(accelPos) : -1; - - dc.SetTextForeground(*wxBLACK); //for use in makeWhiteTransparent - dc.SetTextBackground(*wxWHITE); // - dc.SetFont(currentFont); - - dc.DrawLabel(replaceCpy(text, L"&", L"", false), //remove accelerator - wxNullBitmap, wxRect(0, 0, newBitmap.GetWidth(), newBitmap.GetHeight()), wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL, indexAccel); - } - - //add alpha channel to image - wxImage finalImage(newBitmap.ConvertToImage()); - finalImage.SetAlpha(); - - //set values for alpha channel - makeWhiteTransparent(finalImage); - - //now apply real text color - unsigned char* bytePos = finalImage.GetData(); - const int pixelCount = finalImage.GetWidth() * finalImage.GetHeight(); - for (int i = 0; i < pixelCount; ++ i) - { - *bytePos++ = textColor.Red(); - *bytePos++ = textColor.Green(); - *bytePos++ = textColor.Blue(); - } - - return wxBitmap(finalImage); -} - - -//copy one image into another, allowing arbitrary overlapping! (pos may contain negative numbers) -void writeToImage(const wxImage& source, const wxPoint& pos, wxImage& target) -{ - //determine startpositions in source and target image, as well as width and height to be copied - wxPoint posSrc, posTrg; - int width, height; - - //X-axis - if (pos.x < 0) - { - posSrc.x = -pos.x; - posTrg.x = 0; - width = std::min(pos.x + source.GetWidth(), target.GetWidth()); - } - else - { - posSrc.x = 0; - posTrg.x = pos.x; - width = std::min(target.GetWidth() - pos.x, source.GetWidth()); - } - - //Y-axis - if (pos.y < 0) - { - posSrc.y = -pos.y; - posTrg.y = 0; - height = std::min(pos.y + source.GetHeight(), target.GetHeight()); - } - else - { - posSrc.y = 0; - posTrg.y = pos.y; - height = std::min(target.GetHeight() - pos.y, source.GetHeight()); - } - - - if (width > 0 && height > 0) - { - { - //copy source to target respecting overlapping parts - const unsigned char* sourcePtr = source.GetData() + 3 * (posSrc.x + posSrc.y * source.GetWidth()); - const unsigned char* const sourcePtrEnd = source.GetData() + 3 * (posSrc.x + (posSrc.y + height) * source.GetWidth()); - unsigned char* targetPtr = target.GetData() + 3 * (posTrg.x + posTrg.y * target.GetWidth()); - - while (sourcePtr < sourcePtrEnd) - { - memcpy(targetPtr, sourcePtr, 3 * width); - sourcePtr += 3 * source.GetWidth(); - targetPtr += 3 * target.GetWidth(); - } - } - - //handle different cases concerning alpha channel - if (source.HasAlpha()) - { - if (!target.HasAlpha()) - { - target.SetAlpha(); - memset(target.GetAlpha(), wxIMAGE_ALPHA_OPAQUE, target.GetWidth() * target.GetHeight()); - } - - //copy alpha channel - const unsigned char* sourcePtr = source.GetAlpha() + (posSrc.x + posSrc.y * source.GetWidth()); - const unsigned char* const sourcePtrEnd = source.GetAlpha() + (posSrc.x + (posSrc.y + height) * source.GetWidth()); - unsigned char* targetPtr = target.GetAlpha() + (posTrg.x + posTrg.y * target.GetWidth()); - - while (sourcePtr < sourcePtrEnd) - { - memcpy(targetPtr, sourcePtr, width); - sourcePtr += source.GetWidth(); - targetPtr += target.GetWidth(); - } - } - else if (target.HasAlpha()) - { - unsigned char* targetPtr = target.GetAlpha() + (posTrg.x + posTrg.y * target.GetWidth()); - const unsigned char* const targetPtrEnd = target.GetAlpha() + (posTrg.x + (posTrg.y + height) * target.GetWidth()); - - while (targetPtr < targetPtrEnd) - { - memset(targetPtr, wxIMAGE_ALPHA_OPAQUE, width); - targetPtr += target.GetWidth(); - } - } - } -} - - -void BitmapButton::refreshButtonLabel() -{ - wxBitmap bitmapText = createBitmapFromText(GetLabel()); - - auto getSize = [](const wxBitmap& bmp) { return bmp.IsOk() ? wxSize(bmp.GetWidth(), bmp.GetHeight()) : wxSize(0, 0); }; - - wxSize szFront = getSize(bitmapFront); // - wxSize szText = getSize(bitmapText); //make sure to NOT access null-bitmaps! - wxSize szBack = getSize(bitmapBack); // - - //calculate dimensions of new button - const int height = std::max(std::max(szFront.GetHeight(), szText.GetHeight()), szBack.GetHeight()); - const int width = szFront.GetWidth() + spaceAfter_ + szText.GetWidth() + spaceBefore_ + szBack.GetWidth(); - - //create a transparent image - wxImage transparentImage(width, height, false); - transparentImage.SetAlpha(); - unsigned char* alpha = transparentImage.GetAlpha(); - ::memset(alpha, wxIMAGE_ALPHA_TRANSPARENT, width * height); - - //wxDC::DrawLabel() unfortunately isn't working for transparent images on Linux, so we need to use custom image-concatenation - if (bitmapFront.IsOk()) - writeToImage(bitmapFront.ConvertToImage(), - wxPoint(0, (transparentImage.GetHeight() - bitmapFront.GetHeight()) / 2), - transparentImage); - - if (bitmapText.IsOk()) - writeToImage(bitmapText.ConvertToImage(), - wxPoint(szFront.GetWidth() + spaceAfter_, (transparentImage.GetHeight() - bitmapText.GetHeight()) / 2), - transparentImage); - - if (bitmapBack.IsOk()) - writeToImage(bitmapBack.ConvertToImage(), - wxPoint(szFront.GetWidth() + spaceAfter_ + szText.GetWidth() + spaceBefore_, (transparentImage.GetHeight() - bitmapBack.GetHeight()) / 2), - transparentImage); - - //adjust button size - wxSize minSize = GetMinSize(); - - //SetMinSize() instead of SetSize() is needed here for wxWindows layout determination to work corretly - wxBitmapButton::SetMinSize(wxSize(std::max(width + 2 * innerBorderSize, minSize.GetWidth()), - std::max(height + 2 * innerBorderSize, minSize.GetHeight()))); - - //finally set bitmap - wxBitmapButton::SetBitmapLabel(wxBitmap(transparentImage)); -} |