CANVAS EN MILLIMÈTRE canvas, millimètre, printer, Source N°45606

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Catégorie :Graphique Classé sous : canvas, millimètre, printer Niveau : Débutant Date de création : 02/02/2008 Date de mise à jour : 02/02/2008 19:33:59 Vu / téléchargé: 2 355 / 479

Auteur : barbichette

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Description

Ben voilà, rien de bien révolutionnaire.
C'est une classe dérivé de TCanvas qui prend comme paramètre dans les procédures de dessins des valeurs en 1/10 de millimètre.
Donc TMMCanvas.rectangle(0,0,1000,1000) trace un carré de 10cm de côté.
Pour une utilisation simple, il suffit de transtyper un canvas en tmmcanvas.
Par exemple :
tmmcanvas(form1.canvas).ellypse(0,0,200,200); trace un cercle de 2cm de diamètre sur le canvas d'une fenêtre.

Très pratique pour le canvas de l'objet Printer. Ainsi, on trace en mm sur l'imprimante.

Source

unit UMMCanvas;
interface
uses windows,graphics;
type
TMMCanvas=class(Tcanvas)
private
function ConvertX(x:integer):integer;
function ConvertY(y:integer):integer;
function InvConvertX(x:integer):integer;
function InvConvertY(y:integer):integer;
function ConvertPoint(pt:TPoint):TPoint;
function ConvertRect(rect:trect):TRect;
function GetPixel(X, Y: Integer): TColor;
procedure SetPixel(X, Y: Integer; Value: TColor);
protected
public
constructor Create;
destructor Destroy; override;
procedure MMArc(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
procedure MMBrushCopy(Const Dest: TRect; Bitmap: TBitmap; Const Source: TRect; Color: TColor);
procedure MMChord(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
procedure MMCopyRect(Const Dest: TRect; Canvas: TCanvas;Const Source: TRect);
procedure MMDraw(X, Y: Integer; Graphic: TGraphic);
procedure MMDrawFocusRect(const Rect: TRect);
procedure MMEllipse(X1, Y1, X2, Y2: Integer); overload;
procedure MMEllipse(const Rect: TRect); overload;
procedure MMFillRect(const Rect: TRect);
procedure MMFloodFill(X, Y: Integer; Color: TColor; FillStyle: TFillStyle);
procedure MMFrameRect(const Rect: TRect);
procedure MMLineTo(X, Y: Integer);
procedure MMMoveTo(X, Y: Integer);
procedure MMPie(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
procedure MMPolygon(const Points: array of TPoint);
procedure MMPolyline(const Points: array of TPoint);
procedure MMPolyBezier(const Points: array of TPoint);
procedure MMPolyBezierTo(const Points: array of TPoint);
procedure MMRectangle(X1, Y1, X2, Y2: Integer); overload;
procedure MMRectangle(const Rect: TRect); overload;
procedure MMRoundRect(X1, Y1, X2, Y2, X3, Y3: Integer);
procedure MMStretchDraw(const Rect: TRect; Graphic: TGraphic);
function MMTextExtent(const Text: string): TSize;
function MMTextHeight(const Text: string): Integer;
procedure MMTextOut(X, Y: Integer; const Text: string);
procedure MMTextRect(Rect: TRect; X, Y: Integer; const Text: string);
function MMTextWidth(const Text: string): Integer;
property MMPixels[X, Y: Integer]: TColor read GetPixel write SetPixel;
published
end;
implementation
function TMMCanvas.ConvertX(x:integer):integer;
begin
result:=GetDeviceCaps(Handle, LOGPIXELSX);
result:=x*result div 254;
end;
function TMMCanvas.ConvertY(y:integer):integer;
begin
result:=GetDeviceCaps(Handle, LOGPIXELSY);
result:=y*result div 254;
end;
function TMMCanvas.InvConvertX(x:integer):integer;
begin
result:=GetDeviceCaps(Handle, LOGPIXELSX);
result:=x*254 div result;
end;
function TMMCanvas.InvConvertY(y:integer):integer;
begin
result:=GetDeviceCaps(Handle, LOGPIXELSY);
result:=y*254 div result;
end;
function TMMCanvas.ConvertPoint(pt:TPoint):TPoint;
begin
result.x:=GetDeviceCaps(Handle, LOGPIXELSX);
result.y:=GetDeviceCaps(Handle, LOGPIXELSY);
result.x:=pt.x*result.x div 254;
result.y:=pt.y*result.y div 254;
end;
function TMMCanvas.ConvertRect(rect:trect):TRect;
var
lpx,lpy:integer;
begin
lpx:=GetDeviceCaps(Handle, LOGPIXELSX);
lpy:=GetDeviceCaps(Handle, LOGPIXELSY);
result.Left:=rect.Left*lpx div 254;
result.Top:=rect.Top*lpy div 254;
result.right:=rect.right*lpx div 254;
result.bottom:=rect.bottom*lpy div 254;
end;
constructor TMMCanvas.Create;
begin
inherited Create;
end;
destructor TMMCanvas.Destroy;
begin
inherited Destroy;
end;
procedure TMMCanvas.MMArc(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
x1:=convertx(x1); y1:=converty(y1);
x2:=convertx(x2); y2:=converty(y2);
x3:=convertx(x3); y3:=converty(y3);
x4:=convertx(x4); y4:=converty(y4);
Arc( X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;
procedure TMMCanvas.MMBrushCopy(Const Dest: TRect; Bitmap: TBitmap; Const Source: TRect; Color: TColor);
begin
BrushCopy(convertrect(dest), Bitmap, convertrect(source), Color);
end;
procedure TMMCanvas.MMChord(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
x1:=convertx(x1); y1:=converty(y1);
x2:=convertx(x2); y2:=converty(y2);
x3:=convertx(x3); y3:=converty(y3);
x4:=convertx(x4); y4:=converty(y4);
Chord(X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;
procedure TMMCanvas.MMCopyRect(Const Dest: TRect; Canvas: TCanvas;Const Source: TRect);
begin
CopyRect(convertrect(dest), Canvas, convertrect(source));
end;
procedure TMMCanvas.MMDraw(X, Y: Integer; Graphic: TGraphic);
begin
x:=convertx(x); y:=converty(y);
Draw(X, Y, Graphic);
end;
procedure TMMCanvas.MMDrawFocusRect(const Rect: TRect);
begin
DrawFocusRect(convertrect(Rect));
end;
procedure TMMCanvas.MMEllipse(X1, Y1, X2, Y2: Integer);
begin
x1:=convertx(x1); y1:=converty(y1);
x2:=convertx(x2); y2:=converty(y2);
Ellipse( X1, Y1, X2, Y2);
end;
procedure TMMCanvas.MMEllipse(const Rect: TRect);
begin
MMEllipse(rect.Left, rect.Top, rect.Right, rect.Bottom);
end;
procedure TMMCanvas.MMFillRect(const Rect: TRect);
begin
FillRect(convertRect(Rect));
end;
procedure TMMCanvas.MMFloodFill(X, Y: Integer; Color: TColor;
FillStyle: TFillStyle);
begin
x:=convertx(x); y:=converty(y);
FloodFill(X, Y, Color, FillStyle);
end;
procedure TMMCanvas.MMFrameRect(const Rect: TRect);
begin
FrameRect(convertRect(Rect));
end;
procedure TMMCanvas.MMLineTo(X, Y: Integer);
begin
x:=convertx(x); y:=converty(y);
LineTo(X, Y);
end;
procedure TMMCanvas.MMMoveTo(X, Y: Integer);
begin
x:=convertx(x); y:=converty(y);
MoveTo(X, Y);
end;
procedure TMMCanvas.MMPie(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
x1:=convertx(x1); y1:=converty(y1);
x2:=convertx(x2); y2:=converty(y2);
x3:=convertx(x3); y3:=converty(y3);
x4:=convertx(x4); y4:=converty(y4);
Pie(X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;
procedure TMMCanvas.MMPolygon(const Points: array of TPoint);
var
i:integer;
pt:array of tpoint;
begin
setlength(pt,high(points)+1);
for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
Polygon(pt);
end;
procedure TMMCanvas.MMPolyline(const Points: array of TPoint);
var
i:integer;
pt:array of tpoint;
begin
setlength(pt,high(points)+1);
for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
Polyline(pt);
end;
procedure TMMCanvas.MMPolyBezier(const Points: array of TPoint);
var
i:integer;
pt:array of tpoint;
begin
setlength(pt,high(points)+1);
for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
PolyBezier(pt);
end;
procedure TMMCanvas.MMPolyBezierTo(const Points: array of TPoint);
var
i:integer;
pt:array of tpoint;
begin
setlength(pt,high(points)+1);
for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
PolyBezierTo(pt);
end;
procedure TMMCanvas.MMRectangle(X1, Y1, X2, Y2: Integer);
begin
x1:=convertx(x1); y1:=converty(y1);
x2:=convertx(x2); y2:=converty(y2);
Rectangle(X1, Y1, X2, Y2);
end;
procedure TMMCanvas.MMRectangle(const Rect: TRect);
begin
MMRectangle(Rect.Left, Rect.Top, Rect.Right, Rect.Bottom);
end;
procedure TMMCanvas.MMRoundRect(X1, Y1, X2, Y2, X3, Y3: Integer);
begin
x1:=convertx(x1); y1:=converty(y1);
x2:=convertx(x2); y2:=converty(y2);
x3:=convertx(x3); y3:=converty(y3);
RoundRect(X1, Y1, X2, Y2, X3, Y3);
end;
procedure TMMCanvas.MMStretchDraw(const Rect: TRect; Graphic: TGraphic);
begin
StretchDraw(convertRect(Rect),Graphic);
end;
procedure TMMCanvas.MMTextOut(X, Y: Integer; const Text: String);
begin
x:=convertx(x); y:=converty(y);
TextOut( X, Y,Text);
end;
procedure TMMCanvas.MMTextRect(Rect: TRect; X, Y: Integer; const Text: string);
begin
x:=convertx(x); y:=converty(y);
TextRect(convertRect(Rect), X, Y, Text);
end;
function TMMCanvas.MMTextExtent(const Text: string): TSize;
begin
result:=TextExtent(Text);
result.cx:=invconvertx(result.cx);
result.cy:=invconverty(result.cy);
end;
function TMMCanvas.MMTextWidth(const Text: string): Integer;
begin
Result := TextExtent(Text).cX;
result:=invconvertx(result);
end;
function TMMCanvas.MMTextHeight(const Text: string): Integer;
begin
Result := TextExtent(Text).cY;
result:=invconverty(result);
end;
function TMMCanvas.GetPixel(X, Y: Integer): TColor;
begin
x:=convertx(x); y:=converty(y);
result:=pixels[x,y];
end;
procedure TMMCanvas.SetPixel(X, Y: Integer; Value: TColor);
begin
x:=convertx(x); y:=converty(y);
pixels[x,y]:=value;
end;
end.

unit UMMCanvas;

interface

uses windows,graphics;

type
 TMMCanvas=class(Tcanvas)
  private
    function ConvertX(x:integer):integer;
    function ConvertY(y:integer):integer;
    function InvConvertX(x:integer):integer;
    function InvConvertY(y:integer):integer;
    function ConvertPoint(pt:TPoint):TPoint;
    function ConvertRect(rect:trect):TRect;
    function GetPixel(X, Y: Integer): TColor;
    procedure SetPixel(X, Y: Integer; Value: TColor);
  protected
  public
    constructor Create;
    destructor Destroy; override;
    procedure MMArc(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
    procedure MMBrushCopy(Const Dest: TRect; Bitmap: TBitmap; Const Source: TRect; Color: TColor);
    procedure MMChord(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
    procedure MMCopyRect(Const Dest: TRect; Canvas: TCanvas;Const Source: TRect);
    procedure MMDraw(X, Y: Integer; Graphic: TGraphic);
    procedure MMDrawFocusRect(const Rect: TRect);
    procedure MMEllipse(X1, Y1, X2, Y2: Integer); overload;
    procedure MMEllipse(const Rect: TRect); overload;
    procedure MMFillRect(const Rect: TRect);
    procedure MMFloodFill(X, Y: Integer; Color: TColor; FillStyle: TFillStyle);
    procedure MMFrameRect(const Rect: TRect);

    procedure MMLineTo(X, Y: Integer);

    procedure MMMoveTo(X, Y: Integer);
    procedure MMPie(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
    procedure MMPolygon(const Points: array of TPoint);
    procedure MMPolyline(const Points: array of TPoint);
    procedure MMPolyBezier(const Points: array of TPoint);
    procedure MMPolyBezierTo(const Points: array of TPoint);
    procedure MMRectangle(X1, Y1, X2, Y2: Integer); overload;
    procedure MMRectangle(const Rect: TRect); overload;
    procedure MMRoundRect(X1, Y1, X2, Y2, X3, Y3: Integer);
    procedure MMStretchDraw(const Rect: TRect; Graphic: TGraphic);
    function MMTextExtent(const Text: string): TSize;
    function MMTextHeight(const Text: string): Integer;
    procedure MMTextOut(X, Y: Integer; const Text: string);
    procedure MMTextRect(Rect: TRect; X, Y: Integer; const Text: string);
    function MMTextWidth(const Text: string): Integer;
    property MMPixels[X, Y: Integer]: TColor read GetPixel write SetPixel;
  published

  end;



implementation


function TMMCanvas.ConvertX(x:integer):integer;
begin
 result:=GetDeviceCaps(Handle, LOGPIXELSX);
 result:=x*result div 254;
end;

function TMMCanvas.ConvertY(y:integer):integer;
begin
 result:=GetDeviceCaps(Handle, LOGPIXELSY);
 result:=y*result div 254;
end;

function TMMCanvas.InvConvertX(x:integer):integer;
begin
 result:=GetDeviceCaps(Handle, LOGPIXELSX);
 result:=x*254 div result;
end;

function TMMCanvas.InvConvertY(y:integer):integer;
begin
 result:=GetDeviceCaps(Handle, LOGPIXELSY);
 result:=y*254 div result;
end;


function TMMCanvas.ConvertPoint(pt:TPoint):TPoint;
begin
 result.x:=GetDeviceCaps(Handle, LOGPIXELSX);
 result.y:=GetDeviceCaps(Handle, LOGPIXELSY);
 result.x:=pt.x*result.x div 254;
 result.y:=pt.y*result.y div 254;
end;

function TMMCanvas.ConvertRect(rect:trect):TRect;
var
 lpx,lpy:integer;
begin
 lpx:=GetDeviceCaps(Handle, LOGPIXELSX);
 lpy:=GetDeviceCaps(Handle, LOGPIXELSY);
 result.Left:=rect.Left*lpx div 254;
 result.Top:=rect.Top*lpy div 254;
 result.right:=rect.right*lpx div 254;
 result.bottom:=rect.bottom*lpy div 254;
end;

constructor TMMCanvas.Create;
begin
  inherited Create;
end;

destructor TMMCanvas.Destroy;
begin
  inherited Destroy;
end;

procedure TMMCanvas.MMArc(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
 x1:=convertx(x1);  y1:=converty(y1);
 x2:=convertx(x2);  y2:=converty(y2);
 x3:=convertx(x3);  y3:=converty(y3);
 x4:=convertx(x4);  y4:=converty(y4);
 Arc( X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;

procedure TMMCanvas.MMBrushCopy(Const Dest: TRect; Bitmap: TBitmap; Const Source: TRect; Color: TColor);
begin
 BrushCopy(convertrect(dest), Bitmap, convertrect(source), Color);
end;

procedure TMMCanvas.MMChord(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
 x1:=convertx(x1);  y1:=converty(y1);
 x2:=convertx(x2);  y2:=converty(y2);
 x3:=convertx(x3);  y3:=converty(y3);
 x4:=convertx(x4);  y4:=converty(y4);
 Chord(X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;

procedure TMMCanvas.MMCopyRect(Const Dest: TRect; Canvas: TCanvas;Const Source: TRect);
begin
 CopyRect(convertrect(dest), Canvas, convertrect(source));
end;

procedure TMMCanvas.MMDraw(X, Y: Integer; Graphic: TGraphic);
begin
  x:=convertx(x);  y:=converty(y);
  Draw(X, Y, Graphic);
end;

procedure TMMCanvas.MMDrawFocusRect(const Rect: TRect);
begin
 DrawFocusRect(convertrect(Rect));
end;

procedure TMMCanvas.MMEllipse(X1, Y1, X2, Y2: Integer);
begin
 x1:=convertx(x1);  y1:=converty(y1);
 x2:=convertx(x2);  y2:=converty(y2);
 Ellipse( X1, Y1, X2, Y2);
end;

procedure TMMCanvas.MMEllipse(const Rect: TRect);
begin
 MMEllipse(rect.Left, rect.Top, rect.Right, rect.Bottom);
end;

procedure TMMCanvas.MMFillRect(const Rect: TRect);
begin
 FillRect(convertRect(Rect));
end;

procedure TMMCanvas.MMFloodFill(X, Y: Integer; Color: TColor;
  FillStyle: TFillStyle);
begin
 x:=convertx(x);  y:=converty(y);
 FloodFill(X, Y, Color, FillStyle);
end;

procedure TMMCanvas.MMFrameRect(const Rect: TRect);
begin
 FrameRect(convertRect(Rect));
end;


procedure TMMCanvas.MMLineTo(X, Y: Integer);
begin
 x:=convertx(x);  y:=converty(y);
 LineTo(X, Y);
end;


procedure TMMCanvas.MMMoveTo(X, Y: Integer);
begin
 x:=convertx(x);  y:=converty(y);
 MoveTo(X, Y);
end;

procedure TMMCanvas.MMPie(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
 x1:=convertx(x1);  y1:=converty(y1);
 x2:=convertx(x2);  y2:=converty(y2);
 x3:=convertx(x3);  y3:=converty(y3);
 x4:=convertx(x4);  y4:=converty(y4);
 Pie(X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;


procedure TMMCanvas.MMPolygon(const Points: array of TPoint);
var
 i:integer;
 pt:array of tpoint;
begin
 setlength(pt,high(points)+1);
 for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
 Polygon(pt);
end;

procedure TMMCanvas.MMPolyline(const Points: array of TPoint);
var
 i:integer;
 pt:array of tpoint;
begin
 setlength(pt,high(points)+1);
 for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
 Polyline(pt);
end;

procedure TMMCanvas.MMPolyBezier(const Points: array of TPoint);
var
 i:integer;
 pt:array of tpoint;
begin
 setlength(pt,high(points)+1);
 for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
 PolyBezier(pt);
end;

procedure TMMCanvas.MMPolyBezierTo(const Points: array of TPoint);
var
 i:integer;
 pt:array of tpoint;
begin
 setlength(pt,high(points)+1);
 for i:=0 to high(points) do pt[i]:=convertpoint(points[i]);
 PolyBezierTo(pt);
end;

procedure TMMCanvas.MMRectangle(X1, Y1, X2, Y2: Integer);
begin
 x1:=convertx(x1);  y1:=converty(y1);
 x2:=convertx(x2);  y2:=converty(y2);
 Rectangle(X1, Y1, X2, Y2);
end;

procedure TMMCanvas.MMRectangle(const Rect: TRect);
begin
 MMRectangle(Rect.Left, Rect.Top, Rect.Right, Rect.Bottom);
end;

procedure TMMCanvas.MMRoundRect(X1, Y1, X2, Y2, X3, Y3: Integer);
begin
 x1:=convertx(x1);  y1:=converty(y1);
 x2:=convertx(x2);  y2:=converty(y2);
 x3:=convertx(x3);  y3:=converty(y3);
 RoundRect(X1, Y1, X2, Y2, X3, Y3);
end;

procedure TMMCanvas.MMStretchDraw(const Rect: TRect; Graphic: TGraphic);
begin
 StretchDraw(convertRect(Rect),Graphic);
end;

procedure TMMCanvas.MMTextOut(X, Y: Integer; const Text: String);
begin
 x:=convertx(x);  y:=converty(y);
 TextOut( X, Y,Text);
end;

procedure TMMCanvas.MMTextRect(Rect: TRect; X, Y: Integer; const Text: string);
begin
 x:=convertx(x);  y:=converty(y);
 TextRect(convertRect(Rect), X, Y, Text);
end;

function TMMCanvas.MMTextExtent(const Text: string): TSize;
begin
 result:=TextExtent(Text);
 result.cx:=invconvertx(result.cx);
 result.cy:=invconverty(result.cy);
end;

function TMMCanvas.MMTextWidth(const Text: string): Integer;
begin
  Result := TextExtent(Text).cX;
  result:=invconvertx(result);
end;

function TMMCanvas.MMTextHeight(const Text: string): Integer;
begin
  Result := TextExtent(Text).cY;
 result:=invconverty(result);
end;

function TMMCanvas.GetPixel(X, Y: Integer): TColor;
begin
  x:=convertx(x);  y:=converty(y);
  result:=pixels[x,y];
end;

procedure TMMCanvas.SetPixel(X, Y: Integer; Value: TColor);
begin
  x:=convertx(x);  y:=converty(y);
  pixels[x,y]:=value;
end;

end.

Conclusion

Je joint un petit programme de test qui fait pas grand chose en dehors de dessiner trois gribouillons soit dans un TImage, soit sur une imprimante.
Un carré de 10cm de côté, une ellipse de 1*2cm et un bout de texte de 1cm de hauteur.

Fichier Zip

Pour les "Membres Club", vous pouvez télécharger directement un fichier contenu dans le zip sans télécharger le zip en entier !

Project1.dpr 221 octets
UMMCanvas.pas 8 578 octets
Unit1.dfm1 241 octets
Unit1.pas 1 319 octets

Télécharger le zip

Historique

02 février 2008 19:33:59 :: ajout d'un exemple dans un zip

Sources du même auteur

Toutes les sources de barbichette

Sources de la même categorie

Toutes les sources de la catégorie Graphique

Sources en rapport avec celle ci

Commentaires

Commentaire de cantador le 02/02/2008 18:54:18

salut barbichette,
un petit exemple de ce qu'on peut envoyer à l'imprimante afin de montrer en quoi cette classe peut s'avérer utile.
Dans un autre style, j'aime bcp tes anims..
Commentaire de f0xi le 02/02/2008 18:57:52 administrateur CS

Un zip! des femmes et d'la biere nom de dieu!
Moi je veux un zip! pour par copier-coller comme un con!
Un zip! des femmes c'est ça qui'm'rend heureux!
Que'l'diable nous emporte, mais ce s'rait franchement mieux!
Commentaire de MAURICIO le 04/02/2008 14:47:13

Salut Barbichette,

ça fait longtemps que l 'on a pas de tes nouvelles?!

Par contre, ça fait plaisir cette source, j' y ai déjà pensé, comme quoi ... Ça va me faire gagner du temps.

Par contre, je rejoins les autres, une petite source aurait été mieux!

@florenth: GDI+ ??? tu peux m' en dire plus? demo? etc .. ?

A+
Commentaire de Caribensila le 04/02/2008 17:08:43

Salut,

Peut-être complémentaire :

http://www.codyx.org/snippet_convertir-distance-sur-votre-ecran-pixels-millimetres_464.aspx
Commentaire de MAURICIO le 28/02/2008 17:33:50

Salut Barbichette,

je suis en pleine étude de ta unit,
que fait au juste la fonction InvConvertX ?

Merci d' avance ...
Commentaire de MAURICIO le 28/02/2008 18:05:14

Ok ok, j' avais déjà compris ! lol
Je me suis couché tard ...
Merci quand même lol
Commentaire de MAURICIO le 29/02/2008 12:55:39

Salut Barbichette,

j' ai fini d' écrire ma propre unit qui est pompée à 99% sur la tienne.
J' ai juste changé TMMCanvas par TDMMCanvas: DMM veut dire 10ème de milimètre et changé le nom des propriétés/fonctions.

J' ai aussi crée :
property  DMMPixels[X, Y: Integer]: TColor read DMMGetPixel write DMMSetPixel;

Bon, je te poste ma Unit, ce sera plus simple (je vais pas faire un code sur une source copiée à 99%):

unit Tc_DmmCanvas;

interface

uses windows,graphics;

type
  TDMMCanvas=class(Tcanvas)
  private
    function  DMMGetPixel(X, Y: Integer): TColor;
    procedure DMMSetPixel(X, Y: Integer; Value: TColor);
    function  DMMGetFontHeight: Integer;
    procedure DMMSetFontHeight(Value: Integer);
  protected
  public
    constructor Create;
    destructor Destroy; override;

    // Fonctions de conversion en 10ème de milimètres :
    function  PxToDmm_X(x:integer): integer;
    function  PxToDmm_Y(y:integer): integer;

    // Fonctions de conversion en pixels :
    function  DmmToPx_X(x:integer): integer;
    function  DmmToPx_Y(y:integer): integer;
    function  DmmToPx_Point(pt:TPoint): TPoint;
    function  DmmToPx_Rect(rect:trect): TRect;

    // Fonctions de dessin en 10ème de milimètres :
    procedure DMMArc(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
    procedure DMMBrushCopy(Const Dest: TRect; Bitmap: TBitmap; Const Source: TRect; Color: TColor);
    procedure DMMChord(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
    procedure DMMCopyRect(Const Dest: TRect; Canvas: TCanvas;Const Source: TRect);
    procedure DMMDraw(X, Y: Integer; Graphic: TGraphic);
    procedure DMMDrawFocusRect(const Rect: TRect);
    procedure DMMEllipse(X1, Y1, X2, Y2: Integer); overload;
    procedure DMMEllipse(const Rect: TRect); overload;
    procedure DMMFillRect(const Rect: TRect);
    procedure DMMFloodFill(X, Y: Integer; Color: TColor; FillStyle: TFillStyle);
    procedure DMMFrameRect(const Rect: TRect);
    procedure DMMLineTo(X, Y: Integer);
    procedure DMMMoveTo(X, Y: Integer);
    procedure DMMPie(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
    procedure DMMPolygon(const Points: array of TPoint);
    procedure DMMPolyline(const Points: array of TPoint);
    procedure DMMPolyBezier(const Points: array of TPoint);
    procedure DMMPolyBezierTo(const Points: array of TPoint);
    procedure DMMRectangle(X1, Y1, X2, Y2: Integer); overload;
    procedure DMMRectangle(const Rect: TRect); overload;
    procedure DMMRoundRect(X1, Y1, X2, Y2, X3, Y3: Integer);
    procedure DMMStretchDraw(const Rect: TRect; Graphic: TGraphic);
    function  DMMTextExtent(const Text: string): TSize;    // Largeur et hauteur en DMM du texte dans la police actuelle
    function  DMMTextHeight(const Text: string): Integer;
    procedure DMMTextOut(X, Y: Integer; const Text: string);
    procedure DMMTextRect(Rect: TRect; X, Y: Integer; const Text: string);
    function  DMMTextWidth(const Text: string): Integer;
    property  DMMFontHeight: Integer read DMMGetFontHeight write DMMSetFontHeight;
    property  DMMPixels[X, Y: Integer]: TColor read DMMGetPixel write DMMSetPixel;
  published

  end;

implementation

constructor TDMMCanvas.Create;
begin
  inherited Create;
end;

destructor TDMMCanvas.Destroy;
begin
  inherited Destroy;
end;

// Convertir en 10ème de milimètres ...
function TDMMCanvas.PxToDmm_X(x: integer):integer;
begin
  result := GetDeviceCaps(Handle, LOGPIXELSX);
  result := x * 254 div result;
end;

// Convertir en 10ème de milimètres ...
function TDMMCanvas.PxToDmm_Y(y: integer):integer;
begin
  result := GetDeviceCaps(Handle, LOGPIXELSY);
  result := y * 254 div result;
end;

// Convertir en pixels ...
function TDMMCanvas.DmmToPx_X(x: integer):integer;
begin
  result := GetDeviceCaps(Handle, LOGPIXELSX);  // Récupérer le nombre de points par pouce du Canvas ...
  result := x * result div 254;
end;

// Convertir en pixels ...
function TDMMCanvas.DmmToPx_Y(y: integer):integer;
begin
  result := GetDeviceCaps(Handle, LOGPIXELSY);
  result := y * result div 254;
end;

// Convertir en pixels :
function TDMMCanvas.DmmToPx_Point(pt: TPoint):TPoint;
begin
  result.x := GetDeviceCaps(Handle, LOGPIXELSX);
  result.y := GetDeviceCaps(Handle, LOGPIXELSY);
  result.x := pt.x * result.x div 254;
  result.y := pt.y * result.y div 254;
end;

function TDMMCanvas.DmmToPx_Rect(rect: TRect):TRect;
var lpx, lpy:integer;
begin
  lpx := GetDeviceCaps(Handle, LOGPIXELSX);
  lpy := GetDeviceCaps(Handle, LOGPIXELSY);

  result.Left := rect.Left * lpx div 254;
  result.Top := rect.Top * lpy div 254;
  result.right := rect.right * lpx div 254;
  result.bottom := rect.bottom * lpy div 254;
end;

procedure TDMMCanvas.DMMArc(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
  x1 := DmmToPx_X(x1);  y1 := DmmToPx_Y(y1);
  x2 := DmmToPx_X(x2);  y2 := DmmToPx_Y(y2);
  x3 := DmmToPx_X(x3);  y3 := DmmToPx_Y(y3);
  x4 := DmmToPx_X(x4);  y4 := DmmToPx_Y(y4);
  Arc( X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;

procedure TDMMCanvas.DMMBrushCopy(Const Dest: TRect; Bitmap: TBitmap; Const Source: TRect; Color: TColor);
begin
  BrushCopy(DmmToPx_Rect(dest), Bitmap, DmmToPx_Rect(source), Color);
end;

procedure TDMMCanvas.DMMChord(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
  x1 := DmmToPx_X(x1);  y1 := DmmToPx_Y(y1);
  x2 := DmmToPx_X(x2);  y2 := DmmToPx_Y(y2);
  x3 := DmmToPx_X(x3);  y3 := DmmToPx_Y(y3);
  x4 := DmmToPx_X(x4);  y4 := DmmToPx_Y(y4);
  Chord(X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;

procedure TDMMCanvas.DMMCopyRect(Const Dest: TRect; Canvas: TCanvas;Const Source: TRect);
begin
  CopyRect(DmmToPx_Rect(dest), Canvas, DmmToPx_Rect(source));
end;

procedure TDMMCanvas.DMMDraw(X, Y: Integer; Graphic: TGraphic);
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  Draw(X, Y, Graphic);
end;

procedure TDMMCanvas.DMMDrawFocusRect(const Rect: TRect);
begin
  DrawFocusRect(DmmToPx_Rect(Rect));
end;

procedure TDMMCanvas.DMMEllipse(X1, Y1, X2, Y2: Integer);
begin
  x1 := DmmToPx_X(x1);  y1 := DmmToPx_Y(y1);
  x2 := DmmToPx_X(x2);  y2 := DmmToPx_Y(y2);
  Ellipse( X1, Y1, X2, Y2);
end;

procedure TDMMCanvas.DMMEllipse(const Rect: TRect);
begin
  DMMEllipse(rect.Left, rect.Top, rect.Right, rect.Bottom);
end;

procedure TDMMCanvas.DMMFillRect(const Rect: TRect);
begin
  FillRect(DmmToPx_Rect(Rect));
end;

procedure TDMMCanvas.DMMFloodFill(X, Y: Integer; Color: TColor;
  FillStyle: TFillStyle);
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  FloodFill(X, Y, Color, FillStyle);
end;

procedure TDMMCanvas.DMMFrameRect(const Rect: TRect);
begin
  FrameRect(DmmToPx_Rect(Rect));
end;

procedure TDMMCanvas.DMMLineTo(X, Y: Integer);
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  LineTo(X, Y);
end;

procedure TDMMCanvas.DMMMoveTo(X, Y: Integer);
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  MoveTo(X, Y);
end;

procedure TDMMCanvas.DMMPie(X1, Y1, X2, Y2, X3, Y3, X4, Y4: Integer);
begin
  x1 := DmmToPx_X(x1);  y1 := DmmToPx_Y(y1);
  x2 := DmmToPx_X(x2);  y2 := DmmToPx_Y(y2);
  x3 := DmmToPx_X(x3);  y3 := DmmToPx_Y(y3);
  x4 := DmmToPx_X(x4);  y4 := DmmToPx_Y(y4);
  Pie(X1, Y1, X2, Y2, X3, Y3, X4, Y4);
end;

procedure TDMMCanvas.DMMPolygon(const Points: array of TPoint);
var
  i:integer;
  pt:array of tpoint;
begin
  setlength(pt, high(points) + 1);

  for i := 0 to high(points) do
    pt[i] := DmmToPx_Point(points[i]);

  Polygon(pt);
end;

procedure TDMMCanvas.DMMPolyline(const Points: array of TPoint);
var
  i:integer;
  pt:array of tpoint;
begin
  setlength(pt, high(points)+1);

  for i := 0 to high(points) do
    pt[i] := DmmToPx_Point(points[i]);

  Polyline(pt);
end;

procedure TDMMCanvas.DMMPolyBezier(const Points: array of TPoint);
var
  i:integer;
  pt:array of tpoint;
begin
  setlength(pt, high(points) + 1);

  for i := 0 to high(points) do
    pt[i] := DmmToPx_Point(points[i]);

  PolyBezier(pt);
end;

procedure TDMMCanvas.DMMPolyBezierTo(const Points: array of TPoint);
var
  i:integer;
  pt:array of tpoint;
begin
  setlength(pt, high(points) + 1);

  for i := 0 to high(points) do
    pt[i] := DmmToPx_Point(points[i]);

  PolyBezierTo(pt);
end;

procedure TDMMCanvas.DMMRectangle(X1, Y1, X2, Y2: Integer);
begin
  x1 := DmmToPx_X(x1);  y1 := DmmToPx_Y(y1);
  x2 := DmmToPx_X(x2);  y2 := DmmToPx_Y(y2);
  Rectangle(X1, Y1, X2, Y2);
end;

procedure TDMMCanvas.DMMRectangle(const Rect: TRect);
begin
  DMMRectangle(Rect.Left, Rect.Top, Rect.Right, Rect.Bottom);
end;

procedure TDMMCanvas.DMMRoundRect(X1, Y1, X2, Y2, X3, Y3: Integer);
begin
  x1 := DmmToPx_X(x1);  y1 := DmmToPx_Y(y1);
  x2 := DmmToPx_X(x2);  y2 := DmmToPx_Y(y2);
  x3 := DmmToPx_X(x3);  y3 := DmmToPx_Y(y3);
  RoundRect(X1, Y1, X2, Y2, X3, Y3);
end;

procedure TDMMCanvas.DMMStretchDraw(const Rect: TRect; Graphic: TGraphic);
begin
  StretchDraw(DmmToPx_Rect(Rect), Graphic);
end;

procedure TDMMCanvas.DMMTextOut(X, Y: Integer; const Text: String);
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  TextOut(X, Y, Text);
end;

procedure TDMMCanvas.DMMTextRect(Rect: TRect; X, Y: Integer; const Text: string);
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  TextRect(DmmToPx_Rect(Rect), X, Y, Text);
end;

function TDMMCanvas.DMMTextExtent(const Text: string): TSize;
begin
  result := TextExtent(Text);
  result.cx := PxToDmm_X(result.cx);
  result.cy := PxToDmm_Y(result.cy);
end;

function TDMMCanvas.DMMTextWidth(const Text: string): Integer;
begin
  result := TextExtent(Text).cX;
  result := PxToDmm_X(result);
end;

function TDMMCanvas.DMMTextHeight(const Text: string): Integer;
begin
  Result := TextExtent(Text).cY;
  Result := PxToDmm_Y(result);
end;

function TDMMCanvas.DMMGetPixel(X, Y: Integer): TColor;
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  result := pixels[x,y];
end;

procedure TDMMCanvas.DMMSetPixel(X, Y: Integer; Value: TColor);
begin
  x := DmmToPx_X(x);  y := DmmToPx_Y(y);
  pixels[x,y] := value;
end;

function TDMMCanvas.DMMGetFontHeight: Integer;
begin
  result := Font.Height * 254 div Font.PixelsPerInch;
end;

procedure TDMMCanvas.DMMSetFontHeight(Value: Integer);
begin
  Font.Height := Value * Font.PixelsPerInch div 254;
end;

end.

En tout cas je te remercie, tu m' as fais gagné du temps!!!
Bravo encore une fois, j' attends tes prochaines sources avec une certaine impatience ...

A+
Commentaire de MAURICIO le 29/02/2008 12:57:02

Oups, je voulais dire que j' ai ajouté ceci:
property DMMFontHeight: Integer read DMMGetFontHeight write DMMSetFontHeight;

On l' utilise ainsi:
c.DMMFontHeight := 900; // 9 cm de hauteur ...

A+

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